Breeding Border Collies

Complete Guide for Responsible Breeders

Breeding Border Collies requires a deep commitment to preserving the breed's legendary working ability, intelligence, and soundness while navigating a complex landscape of hereditary health conditions. The Border Collie's recognition by the AKC in 1995 was controversial among working dog enthusiasts who feared that conformation breeding would compromise herding instinct and drive. Today's responsible Border Collie breeders must balance breed type, temperament, working ability, and extensive health testing to produce dogs worthy of this remarkable breed.

Breed Overview

The Border Collie originated in the border country between Scotland and England, developed specifically for herding sheep in the challenging terrain of the Scottish Highlands. The breed's name reflects this geographic origin. Modern Border Collies trace back to Old Hemp, a dog born in 1893 who became the foundation sire of the breed and established the intense "eye" (focused stare) that defines Border Collie herding style.

The AKC officially recognized the Border Collie on October 1, 1995, with the Border Collie Society of America (BCSA) designated as the parent club in August 1996. This recognition was highly controversial among working Border Collie enthusiasts who feared that emphasis on appearance over working ability would harm the breed. Today, a divide still exists between working-bred and show-bred lines, though responsible breeders in both communities prioritize health, temperament, and breed characteristics.

Border Collies currently rank #30 in AKC popularity with stable registration trends, behind herding peers like the German Shepherd Dog, Australian Shepherd, and Shetland Sheepdog. The breed's extraordinary intelligence, trainability, and versatility have made it popular in dog sports, service work, and as active companions, though the Border Collie's high energy and drive make it unsuitable for sedentary homes.

The parent club, the Border Collie Society of America, maintains breed standards and educational resources at bordercolliesocietyofamerica.com.

Breed Standard Summary for Breeders

The Border Collie is a well-balanced, medium-sized dog of athletic appearance, displaying agility, grace, and balance combined with substance and stamina. The breed is hard-muscled and slightly longer than tall, approaching work with stealth and creeping movement.

Size specifications:

Males: 19-22 inches tall, 35-55 pounds

Females: 18-21 inches tall, 30-45 pounds

Key breeding priorities from the standard:

• Working ability and instinct - The Border Collie must retain herding drive. Breeding decisions should prioritize preservation of working instinct even in show lines.
• Correct eye and intense gaze - Essential for stock control. The Border Collie's focused, intense expression is breed-defining and must not be lost.
• Sound movement with reach and drive - Tireless work requires efficient gait with strong reach in front and powerful drive from behind.
• Mental stability and trainability - Border Collies should be biddable, responsive, and intensely focused without nervousness or hyperactivity.
• Proper balance and proportion - Slightly longer than tall with moderate bone and substance, athletic rather than heavy or refined.

Disqualifications that affect breeding stock:

• White coat color covering 30% or more of the body (excluding head, neck, chest, legs, feet, and tail tip). This is critical for merle breeding and piebald white patterns.

Serious faults breeders must select against:

• Excessive timidity or nervousness
• Overly aggressive behavior
• Lack of proper eye contact or intense stare when working
• Stilted or inefficient gait
• Lack of proper substance or overly refined build

The Border Collie breed standard emphasizes function over form. Breeders should evaluate dogs for working ability whenever possible, even if the primary purpose is conformation or companion breeding. A Border Collie that cannot demonstrate herding instinct has lost a fundamental breed characteristic.

Reproductive Profile

Border Collies have moderate fertility and average litter sizes for a medium-sized breed, though several breed-specific considerations affect reproductive planning.

Average litter size: 6 puppies (range: 4-8 puppies)

Young females breeding on their first or second heat cycle tend to produce smaller litters of 4 or fewer puppies. Breeders should anticipate smaller first litters and plan accordingly. Litter size typically increases with dam maturity up to age 4-5 years.

C-section rate: 15%

Border Collies typically whelp naturally, but the breed has a predisposition to primary uterine inertia - weak or absent uterine contractions that can necessitate emergency intervention. This is one of the most significant breed-specific whelping complications and requires careful monitoring and preparation.

Fertility challenges:

• Primary uterine inertia - Border Collies are among breeds predisposed to weak or absent uterine contractions during labor. Breeders must monitor progesterone levels carefully to predict whelping date and be prepared for oxytocin administration or emergency C-section.
• Young female fertility - First-heat breedings typically produce smaller litters (4 or fewer puppies), making it economically questionable to breed immature females.
• Bloodline variation - Some lines may have lower fertility rates, making pre-breeding soundness exams advisable for both males and females with unknown reproductive history.

Artificial insemination suitability:

Both natural breeding and AI are common in Border Collies. Fresh and frozen semen AI are widely used, especially for preservation of working lines and accessing superior genetics across geographic distances. Surgical AI may be necessary with frozen semen for optimal conception rates. The breed handles AI procedures well, and progesterone timing protocols are well-established.

Breeding Age and Timeline

Border Collies should not be bred until fully mature and health tested. Rushing to breed young dogs compromises long-term genetic progress and risks producing puppies from dogs with unknown health status.

Female first heat: Typically 6-8 months (range: 5-16 months)

First heat can vary significantly by bloodline and individual. Females from working lines may mature slightly later than show lines.

Recommended first breeding age:

• Females: 2 years (after 3rd or 4th heat cycle and OFA hip clearance)
• Males: 18-24 months (after OFA clearances obtained)

The 2-year minimum for females allows completion of OFA hip and elbow radiographs (24 months minimum) and provides maturity for better mothering ability and larger litter size. Males can be used at 18-24 months if preliminary or final OFA clearances are obtained, though many breeders prefer waiting until 24 months for full physical and mental maturity.

OFA minimum age: 24 months for final hip and elbow certification

Preliminary OFA evaluations can be done as early as 16 months but do not carry the same weight as final 24-month radiographs.

Breeding retirement and frequency:

• Maximum litters per female: 5 litters lifetime
• Retirement age: 6-8 years
• Minimum time between litters: 12-18 months to allow full physical recovery

Breeding every heat cycle (every 6 months) is not recommended for long-term dam health and welfare.

Complete breeding timeline:

1. 16-18 months: Consider preliminary OFA hip/elbow radiographs
2. 18-24 months: Complete all DNA tests (CEA, TNS, NCL, MDR1), annual eye CERF exam, cardiac and thyroid if recommended
3. 24 months: Final OFA hip and elbow radiographs
4. 24-30 months: First breeding after 3rd or 4th heat for females; males can be used earlier if health tested
5. Throughout breeding career: Annual CERF eye exams, maintain current health testing

Required Health Testing

Border Collies have a significant burden of hereditary health conditions, making comprehensive health testing non-negotiable for responsible breeding. The CHIC (Canine Health Information Center) program requires three tests, but responsible breeders should strongly consider additional DNA tests for fatal recessive conditions.

CHIC Required Tests:

• Hip Dysplasia (OFA or PennHIP) - Screens for hip joint malformation and degenerative joint disease. OFA evaluation at 24 months minimum. Estimated cost: 200 dollars. One-time test.
• Eye Examination (CERF/OFA) - Annual ophthalmologist exam screening for Collie Eye Anomaly, Progressive Retinal Atrophy, cataracts, and other eye diseases. Estimated cost: 75 dollars per year. Required annually throughout breeding career.
• CEA DNA Test (Collie Eye Anomaly) - Genetic test determining clear, carrier, or affected status for CEA. One-time test. Estimated cost: 75 dollars. This test is CRITICAL given that CEA is present in a significant percentage of the Border Collie population.

Total CHIC-required testing cost: Approximately 350 dollars (initial year, excluding annual CERF exams)

Additional Recommended Tests (Strongly Advised):

Given the prevalence of serious and fatal genetic conditions in Border Collies, responsible breeders should consider these additional tests:

• TNS DNA Test (Trapped Neutrophil Syndrome) - Screens for fatal immune disorder with 10% carrier rate in the breed. Affected puppies die by 6 months. Cost: 75 dollars. One-time test.
• NCL DNA Test (Neuronal Ceroid Lipofuscinosis) - Screens for progressive neurological disorder causing death by 28 months. Cost: 75 dollars. One-time test.
• MDR1 DNA Test - Screens for multi-drug sensitivity mutation causing severe adverse reactions to common medications including ivermectin. Cost: 75 dollars. One-time test.
• Elbow Dysplasia (OFA) - Though incidence is very low in Border Collies, some breeders include elbows with hip radiographs. Cost: 100 dollars. One-time test.
• Cardiac Exam (OFA) - Auscultation or echocardiogram screening for congenital and acquired heart conditions. Cost: 100 dollars.
• Thyroid Panel (OFA) - Screens for autoimmune thyroiditis and hypothyroidism. Cost: 150 dollars.

Comprehensive testing cost including recommended DNA tests: Approximately 925 dollars per breeding dog (initial year)

This investment is substantial but justified given the severity of TNS, NCL, and MDR1 conditions. Breeding two carriers of TNS or NCL together will produce affected puppies with short, painful lives. The MDR1 mutation can cause death upon exposure to common dewormers and heartworm preventatives.

Where to obtain tests:

• OFA (Orthopedic Foundation for Animals): offa.org
• Annual eye exams: Board-certified veterinary ophthalmologist (ACVO)
• DNA tests: Multiple commercial labs including Embark, Paw Print Genetics, Animal Genetics

All results should be submitted to OFA for public database inclusion to help breed-wide health surveillance.

Hereditary Health Conditions

Border Collies are affected by several serious hereditary conditions, including both polygenic and simple recessive diseases. Understanding prevalence, inheritance modes, and available testing is essential for making informed breeding decisions.

Collie Eye Anomaly (CEA)

Prevalence: Common - present in a significant percentage of the Border Collie population

CEA is the most prevalent genetic condition in Border Collies, with many dogs being carriers or mildly affected. This creates both challenges and opportunities for breeders.

Inheritance: Autosomal recessive with variable expression

DNA test available: Yes - dogs can be tested as clear (normal/normal), carrier (normal/CEA), or affected (CEA/CEA)

Clinical signs: CEA severity ranges dramatically from mild retinal abnormalities with no vision loss to severe cases with retinal detachment and blindness. Critically, CEA severity is determined by 6-8 weeks of age and does not progress. Many mildly affected Border Collies have normal vision throughout life.

Breeding implications: The widespread presence of CEA in the breed means eliminating all carriers and affected dogs would create severe genetic bottlenecks. Responsible approaches include:

• Never breeding two affected dogs together (risk of severely affected puppies)
• Carrier to clear breedings produce 50% clear, 50% carrier puppies - no affected
• Mildly affected dogs with otherwise excellent qualities can be bred to clear dogs, producing carrier puppies
• Always DNA test and ophthalmologist-examine puppies at 6-8 weeks to identify severity

Hip Dysplasia

Prevalence: Most prevalent known genetic disease in Border Collies in terms of impact on quality of life

Inheritance: Polygenic with environmental factors

DNA test: No simple genetic test available; OFA/PennHIP radiographic evaluation required

Clinical signs: Hip joint laxity, pain, lameness, difficulty rising, decreased activity, abnormal gait, and progressive arthritis. Severely affected dogs may require total hip replacement surgery.

Age of onset: Variable - can appear in young dogs (6-12 months) or develop later in life

Breeding implications: Select breeding stock with OFA Good or Excellent hip scores. Avoid breeding dogs with Fair or worse ratings. Review pedigrees for hip scores of relatives. Hip dysplasia significantly impacts working ability and quality of life.

Trapped Neutrophil Syndrome (TNS)

Prevalence: 10% carrier rate in both show and working Border Collie populations

Inheritance: Autosomal recessive

DNA test available: Yes

Clinical signs: Bone marrow produces neutrophils but cannot release them into bloodstream. Results in severe immunodeficiency, chronic infections, failure to thrive, and bone marrow failure. Affected puppies rarely survive beyond 6 months despite intensive veterinary care.

Age of onset: Puppyhood - death by 6 months

Breeding implications: TNS is 100% fatal. DNA testing is simple and inexpensive. Carrier-to-carrier breeding produces 25% affected puppies. This is completely preventable through DNA testing. Never breed two TNS carriers together.

Neuronal Ceroid Lipofuscinosis (NCL/CL)

Prevalence: Moderate - specific incidence varies by breeding line

Inheritance: Autosomal recessive

DNA test available: Yes

Clinical signs: Progressive neurological deterioration including behavioral abnormalities, sleep disturbances, seizures, ataxia, vision loss leading to blindness, and mental deterioration. Affected dogs experience suffering and early death.

Age of onset: 15-28 months - most affected dogs do not survive beyond 28 months

Breeding implications: Like TNS, NCL is fatal and completely preventable through DNA testing. Carrier-to-carrier breedings produce 25% affected puppies. Avoid this breeding combination.

MDR1 Multi-Drug Sensitivity

Prevalence: Present in the breed but lower prevalence than in Collies or Australian Shepherds (approximately 15% of Border Collies affected or carriers)

Inheritance: Autosomal incomplete dominant (heterozygotes show some sensitivity)

DNA test available: Yes

Clinical signs: Severe adverse reactions to common medications including ivermectin (used in heartworm preventatives), loperamide (Imodium), and some chemotherapy agents. Reactions include neurological toxicity, tremors, seizures, coma, and potential death.

Age of onset: Lifelong concern - reactions occur upon drug exposure

Breeding implications: While MDR1 is not immediately fatal like TNS or NCL, affected dogs require lifelong medication restrictions. Owners must inform all veterinarians of MDR1 status to avoid dangerous drug administration. Breeding two affected dogs produces 100% affected puppies. Many breeders select against MDR1 to reduce this management burden for puppy buyers.

Progressive Retinal Atrophy (PRA)

Prevalence: Rare but present in some lines

Inheritance: Autosomal recessive

DNA test available: Yes (breed-specific form)

Clinical signs: Progressive degeneration of the retina leading to night blindness initially, then complete blindness

Age of onset: Variable - typically 3-5 years of age

Breeding implications: DNA testing allows complete avoidance of affected dogs through selective breeding. PRA is less common than CEA but causes progressive blindness rather than stable vision.

Epilepsy (Idiopathic)

Prevalence: Moderate - exact incidence and heritability in Border Collies unknown

Inheritance: Suspected genetic component, mode unknown

DNA test available: No

Clinical signs: Recurrent seizures of varying severity, from mild focal seizures to generalized tonic-clonic seizures

Age of onset: Typically 1-5 years of age

Breeding implications: Dogs with diagnosed epilepsy should not be bred. Siblings and offspring of epileptic dogs may be bred with caution if otherwise excellent, but epilepsy risk should be disclosed to puppy buyers. Research into genetic markers is ongoing.

Color and Coat Genetics

Border Collies display remarkable color diversity, from solid black to intricate merle patterns. Understanding color genetics is essential for producing correctly marked puppies and avoiding dangerous color combinations.

AKC accepted colors: The Border Collie standard accepts an extremely wide range of colors and patterns including black, blue, blue merle, brindle, gold, lilac, red, red merle, sable, sable merle, saddleback sable, white & black, white & blue, white & blue merle, white & red, white & red merle, and white ticked.

In practice, the most common colors are black and white, red and white, and blue merle and white. However, virtually any color can appear within breed standard.

Disqualifying colors/markings:

White covering 30% or more of the body (excluding head, neck, chest, legs, feet, and tail tip) is a disqualification. This is critically important for breeding merle dogs and piebald white patterns, as excessive white is linked to deafness.

Relevant genetic loci:

• A (Agouti) - Controls sable, tricolor, and tan point patterns
• B (Brown) - Produces chocolate/red pigment instead of black
• D (Dilution) - Creates blue (dilute black) and lilac (dilute brown)
• E (Extension) - Controls distribution of dark pigment
• K (Dominant Black) - Controls solid colors vs patterns
• M (Merle) - Creates merle pattern with cryptic and atypical variants
• S (Spotting) - Controls white markings from Irish spotting to piebald

Color genetics complexity: High

Border Collie color genetics are among the most complex in purebred dogs due to the interaction of multiple loci and the presence of cryptic merle variants.

Health-linked colors:

Double Merle (Mm x Mm producing MM) - EXTREMELY DANGEROUS

Breeding two merle Border Collies together is considered unethical by responsible breeders. The homozygous merle genotype (MM) produces dogs with excessive white, often including the head and ears. These dogs have high rates of deafness and/or blindness, microphthalmia (abnormally small eyes), and other serious defects.

Statistics: Merle x merle breeding produces approximately 25% homozygous merle puppies (white or nearly white), 50% heterozygous merle (normally marked), and 25% non-merle. The 25% homozygous merle puppies have severe health problems.

Never breed merle to merle. The risk is not worth any perceived benefit.

Excessive white (piebald)

Border Collies with white markings approaching or exceeding the 30% disqualification threshold have increased risk of deafness due to lack of pigment in the inner ear. The S locus (spotting) controls white extent. Breeding two heavily white-marked dogs increases the chance of producing excessively white puppies that may be deaf or disqualified from showing.

Dilute colors (blue, lilac)

Color Dilution Alopecia (CDA) is rare in Border Collies but has been documented. Dilute-colored dogs (blue, lilac) may develop hair loss and skin problems in affected areas. Most dilute Border Collies do not develop CDA, but the risk exists. Some breeders avoid breeding dilute to dilute to reduce CDA risk.

Practical color breeding guidance:

• Never breed merle x merle - produces double merle puppies with deafness/blindness
• DNA test for merle to identify cryptic merle dogs (appear solid-colored but carry merle gene)
• Evaluate white extent in breeding stock - avoid dogs approaching 30% white body coverage
• Merle x solid breedings are safe and produce 50% merle, 50% solid puppies
• Understand that color should never take priority over health, structure, and temperament
• All color combinations within the standard are acceptable if health-linked risks are avoided

Selecting Breeding Stock

Border Collie breeding stock selection requires evaluation of conformation, movement, temperament, working ability, health testing, and genetic diversity. The goal is to produce dogs that embody the breed's purpose as intelligent, athletic, biddable herding dogs.

Conformation priorities:

• Sound movement with strong reach and drive - The Border Collie must be capable of tireless work. Evaluate gait for efficiency, reach in front, drive from behind, and endurance. Short, choppy movement is a serious fault.
• Correct eye - intense, alert expression with herding gaze - The Border Collie's focused, intense stare is breed-defining. Dogs should demonstrate strong eye contact and focus. Soft, vacant expressions are incorrect.
• Proper balance and proportion - Slightly longer than tall with moderate bone and substance. The Border Collie should appear athletic and capable, neither too heavy nor overly refined.
• Moderate bone and substance - Sufficient bone to support tireless work without becoming heavy or coarse. The breed is a medium-sized working dog, not a large or toy breed.
• Correct head type - Moderate stop, strong muzzle, intelligent expression. Overly rounded skull or snippy muzzle are faults.
• Good topline - Slight slope from withers to croup. Soft or weak toplines indicate poor conditioning or structure.

Common faults to select against:

• Excessive timidity or lack of confidence
• Overly refined or toy-like appearance
• Short, choppy gait lacking reach and drive
• Straight shoulders and rear angulation (limits efficient movement)
• Soft or weak topline
• Overly rounded skull or snippy muzzle
• Excessive white markings approaching disqualification (over 30%)

Temperament evaluation:

Border Collie temperament is as important as physical structure. Evaluate for:

• Herding instinct and eye - Even if breeding for companions or show, assess whether the dog demonstrates herding drive. This can be done through instinct testing on stock (sheep, ducks, cattle) or observing behavior around moving objects, children, or other animals. A Border Collie without herding instinct has lost a fundamental breed characteristic.
• Trainability and handler focus - Border Collies should be highly responsive to their handler, eager to work, and intensely focused. Dogs that are distracted, unfocused, or unresponsive lack correct temperament.
• Energy level and drive - Border Collies have high energy and drive for work. However, hyperactivity or inability to settle is incorrect. Evaluate whether the dog can work intensely but also relax when appropriate.
• Confidence and stability - Border Collies should be confident but not overly bold. Assess reactions to novel environments, sounds, and situations. Excessive fear, sound sensitivity, or aggression are serious temperament faults.
• Biddability - The Border Collie should be eager to please and responsive to direction. Stubborn, dominant, or overly independent dogs lack the biddable nature essential to the breed.

Methods for temperament evaluation:

• Herding instinct testing on livestock (available through herding clubs)
• Observing behavior in novel environments
• Assessing reactions to sounds, unfamiliar people, and other animals
• Evaluating handler focus during training
• Testing problem-solving and learning speed

Genetic diversity and COI:

Border Collies have moderate genetic diversity compared to some breeds. The average coefficient of inbreeding (COI) is approximately 5.2%, though this varies by line.

Target COI: Under 4.0%

Many breeders target COI under 4.0% to maintain genetic diversity and reduce the risk of inheriting two copies of deleterious recessive alleles. Tools like Embark's breeding tools and online COI calculators can help evaluate potential pairings.

Genetic diversity is particularly important in Border Collies given the breed's burden of recessive genetic diseases (CEA, TNS, NCL). Maintaining diversity helps ensure long-term breed health.

Stud dog selection:

When selecting a stud dog, evaluate:

• Complete health testing (hips, eyes, DNA tests)
• Complementary conformation to the female (improve weaknesses, preserve strengths)
• Proven working ability or herding instinct
• Temperament compatible with breeding goals
• COI of the resulting litter under 4.0% if possible
• Stud's producing record (if he has previous offspring, evaluate their quality)

Stud fee range: 800 to 1800 dollars

Stud fees vary based on the male's titles, health testing, working credentials, and producing record. Top working-line or champion show dogs command fees at the higher end. Average stud fees are around 1200 dollars.

Whelping and Neonatal Care

Border Collies typically whelp naturally, but the breed's predisposition to primary uterine inertia requires careful monitoring and preparation for potential intervention.

Recommended whelping method: Natural with close monitoring

C-section rate: 15%

While most Border Collies deliver naturally, the 15% C-section rate is driven primarily by primary uterine inertia rather than anatomical problems.

Breed-specific complications:

Primary uterine inertia - Border Collies are among breeds predisposed to weak or absent uterine contractions during labor. This can manifest as:

• Failure to enter active labor despite due date
• Weak, infrequent contractions that do not progress
• Cessation of contractions mid-whelping with puppies remaining

Prevention and management:

• Monitor progesterone levels during late pregnancy to accurately predict whelping date (progesterone drops below 2 ng/mL within 24 hours of whelping)
• Be prepared to administer oxytocin to stimulate contractions (under veterinary guidance)
• Have a veterinarian on call for emergency C-section if oxytocin is ineffective
• Monitor rectal temperature starting day 58 - temperature drop to 98-99°F indicates whelping within 24 hours

Other breed-specific whelping considerations:

• High-energy dams may become restless and abandon the whelping box during labor. Provide a quiet, secure area and minimize disruptions.
• Strong maternal instinct is usually present, but first-time mothers may need guidance with puppy cleaning and nursing.
• Monitor for dystocia signs (straining for over 30 minutes without puppy, more than 2 hours between puppies, weak contractions)

Expected birth weights:

• Males: 10-14 oz
• Females: 8-12 oz

Daily weight gain targets:

• First 2 weeks: 0.5-1.5 oz per day
• Weeks 3-8: 2-4 oz daily

Puppies should gain weight steadily every day. Failure to gain weight or weight loss indicates inadequate milk supply, illness, or fading puppy syndrome.

Monitoring neonatal health:

• Weigh puppies daily for the first 2 weeks, then every 2-3 days
• Puppies should nurse vigorously and feel warm to the touch
• Fading puppy syndrome can appear in first 2 weeks - puppies become lethargic, stop nursing, and may vocalize excessively
• Supplemental feeding may be necessary for large litters or weak puppies

Dewclaw, tail, and ear practices:

• Dewclaw removal: Not practiced in Border Collies
• Tail docking: Not practiced in Border Collies
• Ear cropping: Not practiced in Border Collies

Border Collies are shown naturally with no cosmetic alterations.

Puppy Development Milestones

Border Collie puppies develop rapidly in the first 12 weeks of life. Understanding growth patterns and developmental milestones helps breeders provide appropriate care and socialization.

Growth pattern:

Border Collie puppies double their birth weight by day 7-10 and continue rapid growth through 8 weeks. Males are typically 10-15% heavier than females at each stage.

Key developmental milestones:

Weeks 0-2 (Neonatal period)

• Eyes and ears closed, completely dependent on dam
• Minimal movement, primarily nursing and sleeping
• Weigh daily to ensure adequate growth

Weeks 2-3 (Transitional period)

• Eyes open around day 10-14
• Ears open around day 13-17
• Begin responding to sounds and visual stimuli
• Start walking (wobbling)

Weeks 3-4 (Awareness period)

• Rapid sensory development
• Begin interacting with littermates
• Start showing interest in solid food (weaning begins)
• Increased vocalizations and play behavior

Weeks 4-7 (Socialization period begins)

• Critical socialization window opens at 3 weeks and extends to 14 weeks
• Introduce puppies to various sounds, surfaces, people, and gentle handling
• Play becomes more coordinated and complex
• Herding instinct may begin to emerge through play (stalking, eye contact, gathering behaviors)

Weeks 7-8 (First fear period)

• Puppies may become wary of new experiences around 8 weeks
• Avoid traumatic experiences during this sensitive period
• Continue positive socialization but don't force fearful puppies

Weaning:

Begin gradual weaning at 5-6 weeks by offering softened puppy food. Full weaning is typically complete by 6-7 weeks, though puppies may continue occasional nursing if dam allows.

Ophthalmologist examination for CEA:

Border Collie puppies should receive eye examinations by a board-certified veterinary ophthalmologist at 6-8 weeks to diagnose Collie Eye Anomaly severity. CEA severity is determined at this age and does not progress, making early diagnosis essential for breeding and placement decisions.

Structural evaluation age:

Evaluate conformation at 7-10 weeks for initial assessment. Border Collies go through growth phases where proportions change, so re-evaluate at 6-8 months and again at maturity (12-15 months).

Herding instinct testing:

Herding instinct can be tested as early as 8-12 weeks on appropriate livestock (usually ducks or sheep). Some breeders test all puppies to identify those with strongest working potential. Even companion/show puppies should demonstrate some level of herding interest as this is a breed-defining characteristic.

Go-home age:

Recommended: 8-10 weeks (10 weeks preferred for temperament evaluation)

While 8 weeks is legally acceptable in most locations, many Border Collie breeders prefer keeping puppies until 10 weeks to:

• Complete temperament and conformation evaluations
• Assess herding instinct if desired
• Ensure socialization foundation is solid
• Allow puppies to learn bite inhibition from littermates
• Provide additional time for puppy buyers to prepare

Socialization window:

The critical socialization period is 3-14 weeks. Breeders should expose puppies to:

• Various surfaces (grass, concrete, carpet, gravel)
• Different sounds (vacuum, TV, music, traffic)
• Multiple people of different ages and appearances
• Gentle handling and grooming
• Car rides
• Crate training introduction
• Novel objects and obstacles

Socialization continues through 6 months. Puppy buyers should be educated on continuing socialization to prevent fear-based behavior problems.

Adult size achievement:

Border Collies reach full physical maturity at 12-15 months. Growth plates close around 12-14 months. Dogs should not be heavily exercised on hard surfaces or jumped extensively until skeletal maturity is complete.

Breeding Economics

Breeding Border Collies responsibly requires significant financial investment in health testing, quality breeding stock, prenatal care, and puppy raising. Understanding true costs and realistic revenue helps breeders make informed decisions.

Health testing costs (per breeding dog):

CHIC-required tests: 350 dollars

• Hip dysplasia OFA/PennHIP: 200 dollars
• Annual eye CERF exam: 75 dollars
• CEA DNA test: 75 dollars

Additional recommended DNA tests: 575 dollars additional

• TNS DNA test: 75 dollars
• NCL DNA test: 75 dollars
• MDR1 DNA test: 75 dollars
• Elbow dysplasia OFA: 100 dollars
• Cardiac exam: 100 dollars
• Thyroid panel: 150 dollars

Comprehensive health testing total: 925 dollars per dog

For a breeding (dam + sire if owned), comprehensive testing costs approximately 1850 dollars. If using an outside stud, budget 925 dollars for dam testing plus verify the stud's testing is complete.

Breeding costs (per litter):

• Stud fee: 1200 dollars (average; range 800-1800 dollars)
• Progesterone testing: 300 dollars (4-6 tests to time breeding)
• Prenatal veterinary care: 400 dollars (pre-breeding exam, ultrasound confirmation, prenatal checkups)
• Whelping costs (natural): 500 dollars (supplies, monitoring, possible oxytocin administration)
• Whelping costs (C-section if needed): 2500 dollars (emergency C-section)
• Puppy veterinary costs: 150 dollars per puppy (first exam, deworming, first vaccines)
• Food costs: 400 dollars (increased dam nutrition during pregnancy/lactation plus puppy food through 8-10 weeks)
• Registration and marketing: 300 dollars (AKC litter registration, individual puppy registrations, website/advertising)

Total costs for natural whelping (6-puppy litter):

• Health testing (dam): 925 dollars (one-time investment amortized across breeding career)
• Stud fee: 1200 dollars
• Progesterone testing: 300 dollars
• Prenatal care: 400 dollars
• Whelping natural: 500 dollars
• Puppy vet care (6 puppies x 150 dollars): 900 dollars
• Food and supplies: 400 dollars
• Registration: 300 dollars

Total: approximately 4925 dollars (excluding dam health testing initial investment)

Total costs for C-section whelping:

Replace natural whelping cost (500 dollars) with C-section cost (2500 dollars): approximately 6925 dollars

Revenue (6-puppy average litter):

• Pet-quality puppies: 1500 dollars each
• Show/breeding-quality puppies: 2500 dollars each

Average litter revenue (6 puppies at 1500 dollars each): 9000 dollars

Most litters include primarily pet-quality puppies with 1-2 show-potential puppies. Conservative estimate uses pet pricing for revenue projection.

Net profit/loss per litter:

Natural whelping: 9000 dollars revenue - 4925 dollars costs = 4075 dollars net

C-section whelping: 9000 dollars revenue - 6925 dollars costs = 2075 dollars net

Economic realities:

These calculations assume:

• All 6 puppies survive and are sold (not always the case)
• No complications requiring additional veterinary care
• Dam does not experience health problems during pregnancy/whelping
• Puppies are healthy and sell at average pricing
• Breeder time is not factored (hundreds of hours)

Hidden costs not included:

• Dam purchase price and show/training investment
• Emergency veterinary care
• Puppy supplies (collars, toys, bedding, cleaning supplies)
• Transportation to stud dog if not using shipped semen
• Time investment in socializing, cleaning, and caring for puppies
• Website maintenance and marketing

Break-even analysis:

If a breeder invests 925 dollars in comprehensive health testing for a female and breeds her 3 times in her career (conservative), the per-litter testing cost is approximately 308 dollars. Adding this to the 4925 dollars per-litter cost brings total to 5233 dollars per litter.

With 9000 dollars revenue and 5233 dollars costs, net is 3767 dollars per litter - IF all goes well.

The economic reality: Responsible Border Collie breeding with comprehensive health testing, quality care, and proper socialization is marginally profitable at best. Breeders who cut corners on health testing or puppy care may appear more profitable but harm the breed and produce puppies with preventable health problems.

Breeder Resources

Border Collie breeders have access to excellent resources through the parent club, regional breed clubs, and online communities dedicated to breed education and health.

Parent Club:

Border Collie Society of America (BCSA)

• Website: https://bordercolliesocietyofamerica.com
• The BCSA is the AKC parent club, designated in 1996
• Provides breed standard, educational resources, breeder directory, and health information
• Organizes national specialty shows and herding events

Additional Organizations:

American Border Collie Association (ABCA)

• Focused on working Border Collies and herding ability
• Maintains separate registry from AKC emphasizing working ability
• Offers herding trials and instinct testing

AKC Breeder Programs:

• AKC Breeder of Merit - Recognition program for breeders who health test, title dogs, and follow best practices
• AKC Bred with H.E.A.R.T. - Program emphasizing Health testing, Education, Accountability, Responsibility, and Tradition

Recommended Books:

• "The Border Collie: A Vet's Guide on How to Care for Your Border Collie Dog"
• "Border Collies: A Complete and Comprehensive Owners Guide"
• "Genetics of the Dog" by Ruvinsky and Sampson - Essential reading for understanding genetic testing and inheritance

Online Communities:

• Border Collie Society of America - Facebook group and forums
• American Border Collie Association - Resources for working Border Collies
• BC Boards (bordercollieboards.com) - Active online forum with sections for breeding, training, and health
• Border Collie Health & Education Foundation - Health research and education

Health Resources:

• Orthopedic Foundation for Animals (OFA) - offa.org - Database for health testing results
• Canine Health Information Center (CHIC) - ofa.org/chic - CHIC requirements and DNA test information
• UC Davis Veterinary Genetics Laboratory - vgl.ucdavis.edu - Color genetics testing and research

Herding Resources:

• American Herding Breed Association (AHBA) - Herding instinct tests and trials
• Local herding clubs and training facilities for instinct testing and training

Frequently Asked Questions

How many puppies do Border Collies typically have?

Border Collies average 6 puppies per litter with a typical range of 4-8 puppies. Litter size varies based on dam age and breeding timing. Young females breeding on their first or second heat typically produce smaller litters of 4 or fewer puppies. Litter size tends to increase with dam maturity up to age 4-5 years, then may decrease with older dams. The largest recorded litters can reach 9-10 puppies, though this is uncommon.

Do Border Collies need C-sections?

Border Collies typically whelp naturally with a C-section rate of approximately 15%. However, the breed is predisposed to primary uterine inertia - weak or absent uterine contractions that can necessitate intervention. Breeders should monitor progesterone levels carefully to predict whelping date and be prepared for oxytocin administration or emergency C-section if labor does not progress normally. Most Border Collies deliver naturally when properly monitored, but the risk of uterine inertia means breeders must have veterinary support ready.

What health tests are required for breeding Border Collies?

The CHIC (Canine Health Information Center) requires three tests for Border Collies: hip dysplasia evaluation (OFA or PennHIP), annual eye examination (CERF), and CEA DNA test (Collie Eye Anomaly). However, responsible breeders should strongly consider additional DNA tests including TNS (Trapped Neutrophil Syndrome), NCL (Neuronal Ceroid Lipofuscinosis), and MDR1 (multi-drug sensitivity) given the serious nature of these conditions. Total CHIC-required testing costs approximately 350 dollars per dog, while comprehensive testing including recommended DNA tests costs around 925 dollars per breeding dog.

How much does it cost to breed Border Collies?

Breeding a Border Collie litter responsibly costs approximately 4925 dollars for natural whelping or 6925 dollars if a C-section is required. This includes stud fee (1200 dollars), progesterone testing (300 dollars), prenatal care (400 dollars), whelping costs (500-2500 dollars), puppy veterinary care (900 dollars for 6 puppies), food (400 dollars), and registration (300 dollars). Initial health testing adds 925 dollars per breeding dog. With average revenue of 9000 dollars for a 6-puppy litter sold at 1500 dollars each, net profit is approximately 4075 dollars for natural whelping - assuming all puppies survive and sell, with no complications.

At what age can you breed a Border Collie?

Females should not be bred before 2 years of age, ideally after their 3rd or 4th heat cycle and after obtaining OFA hip clearance at 24 months. Males can be used for breeding at 18-24 months once OFA clearances are obtained, though many breeders prefer waiting until 24 months for full physical and mental maturity. The 2-year minimum for females allows completion of health testing and provides better mothering ability and larger litter sizes compared to breeding immature females.

How much do Border Collie puppies cost?

Border Collie puppies from health-tested parents typically cost 1500 dollars for pet-quality puppies and 2500 dollars for show/breeding-quality puppies. Prices vary based on breeder location, parents' titles and working credentials, completeness of health testing, and puppy quality. Puppies from proven working lines or champion show dogs may command higher prices. Buyers should verify that breeders complete CHIC-required health testing (hips, eyes, CEA DNA) at minimum and preferably additional DNA tests (TNS, NCL, MDR1). Unusually low prices may indicate lack of health testing or poor breeding practices.

What are the most common health problems in Border Collies?

The most prevalent health concerns in Border Collies include Collie Eye Anomaly (CEA) affecting a significant percentage of the breed population, hip dysplasia which is the most impactful condition on quality of life, Trapped Neutrophil Syndrome (TNS) with a 10% carrier rate, Neuronal Ceroid Lipofuscinosis (NCL), epilepsy, MDR1 multi-drug sensitivity, and Progressive Retinal Atrophy (PRA). CEA, TNS, NCL, MDR1, and PRA all have DNA tests available, allowing breeders to make informed decisions and avoid producing affected puppies. Hip dysplasia requires radiographic evaluation through OFA or PennHIP.

Is breeding Border Collies profitable?

Breeding Border Collies responsibly with comprehensive health testing is marginally profitable at best. A typical 6-puppy litter generates approximately 9000 dollars in revenue (at 1500 dollars per puppy) against costs of 4925 dollars for natural whelping or 6925 dollars for C-section, yielding net profit of 4075 dollars or 2075 dollars respectively. However, these calculations assume all puppies survive and sell, no major health complications occur, and do not include the breeder's time investment (hundreds of hours) or initial costs of purchasing and titling the dam. Breeders who invest in comprehensive health testing (925 dollars per dog) and proper puppy care find that profit margins are small and that breeding should be pursued for breed improvement rather than profit.

Should I test for Collie Eye Anomaly even though it's so common in Border Collies?

Yes, CEA DNA testing is essential even though the condition is widespread in Border Collies. Understanding each dog's genetic status (clear, carrier, or affected) allows informed breeding decisions. While CEA is common, severity varies dramatically - many affected dogs have mild retinal changes with normal vision throughout life, while others may develop retinal detachment and blindness. DNA testing identifies genetic status, and ophthalmologist examination at 6-8 weeks determines severity. Responsible breeding strategies include breeding carriers to clear dogs (producing no affected puppies) or breeding mildly affected dogs with exceptional qualities to clear dogs. Never breed two affected dogs together, as this risks severely affected puppies.

Can I breed two merle Border Collies together?

No. Breeding two merle Border Collies together is considered unethical by responsible breeders and produces homozygous merle (double merle) puppies with severe health problems. Approximately 25% of puppies from merle x merle breedings will be homozygous merle (MM genotype), resulting in excessive white including the head and ears, high rates of deafness and/or blindness, microphthalmia (abnormally small eyes), and other serious defects. Merle x solid-colored breedings are safe and produce 50% merle and 50% solid puppies with normal health. Some merle genes are cryptic (not visible) so DNA testing for merle is important before breeding.

Do I need to test herding instinct if I'm breeding for pets or show?

Yes. Herding instinct is a breed-defining characteristic of the Border Collie, and breeding dogs that lack this fundamental trait contributes to loss of breed type. Even if your primary focus is conformation showing or companion breeding, evaluating herding instinct helps preserve what makes Border Collies unique. Instinct testing can be done through herding clubs on appropriate livestock (sheep, ducks, cattle) as early as 8-12 weeks of age. The Border Collie's intense "eye" (focused stare) and gathering behavior should be present even in dogs not actively trained for stock work. Breeding dogs without herding drive moves the breed away from its purpose and character.

What is the MDR1 mutation and why does it matter?

MDR1 (Multi-Drug Resistance 1) is a genetic mutation that causes severe adverse reactions to common medications including ivermectin (used in many heartworm preventatives), loperamide (Imodium), and some chemotherapy agents. Border Collies with one or two copies of the MDR1 mutation cannot properly metabolize these drugs, leading to neurological toxicity, tremors, seizures, coma, and potential death. Approximately 15% of Border Collies carry or are affected by MDR1. DNA testing identifies dogs at risk, allowing owners to avoid dangerous medications and inform veterinarians of MDR1 status. Many breeders test for MDR1 and select against it to reduce this lifelong management burden for puppy owners.