Breeding Glen of Imaal Terriers

Complete Guide for Responsible Breeders

Breeding Glen of Imaal Terriers presents unique challenges stemming from the breed's rarity, limited gene pool, and distinctive achondroplastic structure. As the rarest of Ireland's four native terrier breeds, the Glen demands extraordinary commitment from breeders to maintain genetic diversity while addressing breed-specific health concerns including Cone Rod Dystrophy 3 (crd3-PRA). This comprehensive guide covers health testing protocols, structural priorities, reproductive considerations, and the economics of breeding this remarkable terrier.

Breed Overview

The Glen of Imaal Terrier originated in the remote Glen of Imaal in County Wicklow, Ireland, where it was developed as a versatile farm dog capable of hunting vermin, badgers, and foxes, while also serving as a turnspit dog. Despite being one of Ireland's four native terrier breeds alongside the Soft Coated Wheaten Terrier, Irish Terrier, and Kerry Blue Terrier, the Glen remains the rarest and least known. The breed was recognized by the Irish Kennel Club in 1934 and finally achieved full AKC recognition in 2004 after years of development in the United States.

The Glen of Imaal Terrier is classified in the AKC Terrier Group and currently ranks 180th in AKC popularity with stable registration trends. The small breeding population in North America makes careful breeding decisions critical for maintaining breed health and genetic diversity. The Glen of Imaal Terrier Club of America (GITCA) provides extensive resources and maintains a strict Code of Ethics for breeders.

Breed Standard Summary for Breeders

The Glen of Imaal Terrier is a medium-length, low-to-ground dog of great strength and substance with an impression of maximum substance for size. The breed is achondroplastic (dwarfed) with bowed forelegs and a longer body than typical terriers. This distinctive structure demands careful attention during breeding stock selection.

Size specifications:

• Males: 12.5-14 inches tall, 34-36 pounds
• Females: 12.5-14 inches tall, 32-35 pounds

Structural priorities for breeding selection:

• Correct achondroplastic front assembly: Bowed forelegs with proper angulation and flexibility, not stilted or straight
• Maximum substance and muscular development: Heavy bone and powerful muscling throughout
• Strong, sound topline: Level topline with powerful loin and well-developed hindquarters
• Harsh, weather-resistant double coat: Wire-textured outer coat, never soft or silky
• Proper head proportions: Strong underjaw, rose or half-prick ears
• Sound movement: Free, ground-covering movement despite dwarfed structure

Serious faults affecting breeding decisions:

• Timid or overly aggressive temperament
• Lacking in substance and strength
• Stilted movement or unsound gait
• Soft, silky, or woolly coat texture
• Height over 14 inches or under 12.5 inches

The breed has no official disqualifications, but temperament and structural soundness are paramount. Males should be decidedly masculine without coarseness; females feminine without overrefinement.

Reproductive Profile

Glen of Imaal Terriers average 5 puppies per litter, with typical litter sizes ranging from 3 to 7 puppies. The C-section rate is approximately 15%, which is moderate for terriers and significantly lower than brachycephalic breeds. Natural whelping is most common, though the achondroplastic structure can occasionally cause positional dystocia requiring veterinary intervention.

Fertility considerations:

• Small gene pool and limited breeding stock in North America necessitate long-distance breeding arrangements
• Some lines may have reduced fertility due to historic inbreeding
• Bitches should not be bred more frequently than 2 litters per 3 seasons to maintain reproductive health
• Geographic dispersion of quality breeding stock often requires artificial insemination

AI suitability: Fresh chilled and frozen AI are frequently used due to the geographic dispersion of breeding stock. The breed responds well to AI protocols, though natural breeding is preferred when feasible. Success rates with frozen semen are comparable to other terrier breeds when proper timing protocols are followed.

Breeding Age and Timeline

Glen of Imaal Terriers typically experience their first heat cycle between 6 and 10 months of age, though this can vary by individual and bloodline. The Glen of Imaal Terrier Club of America Code of Ethics establishes strict breeding age requirements to ensure full maturity and complete health clearances.

Recommended breeding age:

• Females: Minimum 2 years of age (after all health clearances obtained)
• Males: Minimum 18 months

OFA testing schedule: Hip and elbow radiographs cannot be submitted to OFA until 24 months of age. Eye examinations should begin at 12 months and continue throughout the breeding career. The crd3 DNA test can be performed at any age but must be completed before breeding.

Retirement age: Maximum 8 years per GITCA Code of Ethics

Maximum litters per female: 4 lifetime litters maximum

Complete breeding timeline:

1. 18-24 months: Begin preliminary health evaluations; crd3 DNA testing; males may begin stud service with all clearances
2. 24 months: OFA hip and elbow radiographs; CAER eye examination
3. 24-26 months: Earliest recommended breeding age for females with all clearances complete
4. Every 2 years: CAER eye re-examination required throughout breeding career
5. By 8 years: Retirement from breeding program

The extended timeline reflects the breed's emphasis on thorough health screening and the importance of structural maturity in this achondroplastic breed.

Required Health Testing

The Glen of Imaal Terrier has comprehensive CHIC (Canine Health Information Center) requirements reflecting the breed's known health concerns. All four tests are mandatory for responsible breeding, with ongoing eye examinations required throughout a dog's breeding career.

CHIC required tests:

• Hip Dysplasia (OFA or PennHIP): Screens for hip joint malformation and degenerative joint disease. One-time evaluation at 24+ months. Cost: $250
• Elbow Dysplasia (OFA): Screens for elbow joint abnormalities including fragmented coronoid process and ununited anconeal process. One-time evaluation at 24+ months. Cost: $100
• Eye Examination (CAER/ACVO): Screens for progressive retinal atrophy and other hereditary eye diseases. Required every 2 years throughout breeding career. Cost: $75 per exam
• Cone Rod Dystrophy 3 DNA Test (crd3): Screens for the breed-specific form of progressive retinal atrophy unique to Glen of Imaal Terriers. One-time DNA test; results valid for life. Cost: $75

Total estimated cost per breeding dog: Approximately $500 for initial CHIC clearances, plus $75 every two years for eye re-examinations.

Additional recommended tests:

• Cardiac Evaluation: Screens for congenital heart defects. Cost: $75
• Degenerative Myelopathy (DM) DNA Test: Screens for progressive spinal cord disease. GITCA is conducting a prevalence study 2025-2026 to determine carrier frequency in the breed. Cost: $65
• Thyroid Panel: Screens for hypothyroidism, which occurs in some lines. Cost: $150

All OFA testing results (hip, elbow, cardiac) and DNA test results should be publicly available in the OFA database. CAER eye examination results must be current within 24 months of any breeding.

Hereditary Health Conditions

Glen of Imaal Terriers face several hereditary health conditions that require careful breeding management. The most critical is crd3-PRA, a breed-specific progressive retinal disease. Hip dysplasia is relatively common but often asymptomatic due to the breed's structure. Premature Closure of Distal Ulna (PCDU) is a rare but devastating developmental disorder that can occur in growing puppies.

Cone Rod Dystrophy 3 (crd3-PRA):

• Prevalence: Moderate; carrier frequency unknown but DNA testing is mandated for all breeding stock
• Inheritance: Autosomal recessive
• DNA Test: Available and required before breeding
• Clinical Signs: Progressive vision loss beginning with day blindness (difficulty seeing in bright light), advancing to night blindness, and eventual complete blindness. Retinal degeneration is visible on ophthalmoscopic examination.
• Age of Onset: Typically 3+ years; progressive over several years to end-stage retinal degeneration
• Breeding Implications: Clear to clear breedings produce all clear offspring. Clear to carrier breedings produce approximately 50% clear and 50% carrier offspring (all with normal vision). Carrier to carrier breedings should be avoided as they will produce affected puppies. Affected dogs should never be bred.

Hip Dysplasia:

• Prevalence: Moderate (approximately 30% of radiographed dogs show some degree of dysplasia)
• Inheritance: Polygenic with environmental factors
• Clinical Impact: Usually mild and asymptomatic due to breed's low-to-ground structure and heavy muscling. When symptomatic: rear limb lameness, difficulty rising, bunny-hopping gait, reluctance to jump or climb stairs.
• Age of Onset: Variable; can be detected radiographically at 24 months but clinical signs may not appear until middle age or later
• Breeding Recommendations: Breed only dogs with OFA Good or Excellent hips. Fair hips may be used if paired with Good or Excellent. Dogs with hip dysplasia should be excluded from breeding programs.

Elbow Dysplasia:

• Prevalence: Low to moderate in the breed
• Inheritance: Polygenic with environmental factors
• Clinical Signs: Forelimb lameness, elbow pain, decreased range of motion, joint effusion. May be subtle due to the breed's stoic nature.
• Age of Onset: Typically 4-10 months for developmental forms; degenerative changes progress with age
• Breeding Recommendations: Breed only dogs with OFA Normal elbows.

Premature Closure of Distal Ulna (PCDU):

• Prevalence: Low but significant when it occurs
• Inheritance: Unknown, likely genetic with environmental factors
• Clinical Signs: Abnormal front leg growth, carpal valgus (outward deviation), severe pain, and lameness. Can be confused with elbow dysplasia.
• Age of Onset: Growth period, typically 4-8 months
• Management: Surgical intervention may be required; affected dogs should not be bred. Siblings and parents of affected dogs should be used cautiously in breeding programs.

Degenerative Myelopathy (DM):

• Prevalence: Unknown; GITCA is conducting a prevalence study in 2025-2026
• Inheritance: Autosomal recessive (SOD1 gene)
• DNA Test: Available
• Clinical Signs: Progressive hind limb weakness and incoordination, loss of proprioception, eventual paralysis
• Age of Onset: Typically 8+ years in affected dogs
• Note: Testing is recommended but not yet required pending results of the prevalence study.

Allergies (Atopic Dermatitis):

• Prevalence: Common in some lines
• Inheritance: Polygenic with environmental triggers
• Clinical Signs: Pruritus (itching), skin inflammation, ear infections, foot chewing, recurrent skin infections. May be environmental and/or food allergies.
• Age of Onset: Typically 1-3 years; can be seasonal or year-round
• Breeding Implications: Avoid breeding dogs with severe, chronic allergies. Track allergy prevalence in lines.

Color and Coat Genetics

Glen of Imaal Terriers are accepted in three color varieties: wheaten (all shades from cream to red), blue (silver to slate, but not black), and brindle (gray with colored stripes). The breed has a harsh, weather-resistant double coat that must never be soft or silky. Coat texture is as important as color in breeding decisions.

Accepted colors:

• Wheaten: All shades from cream to red; most common color in the breed
• Blue: Silver to slate, produced by the dilution gene; blue pigment must be apparent, not black
• Brindle: Gray with colored stripes; requires specific genetic combination

Relevant genetic loci:

• A (Agouti): Controls brindle pattern expression
• E (Extension): Controls red/wheaten expression
• D (Dilution): Responsible for blue color; blue is the dilute form (d/d), wheaten and brindle are non-dilute (D/-)
• K (Dominant Black): Dogs must be ky/ky for brindle pattern to express; KB (dominant black) prevents brindle expression

Basic genetic combinations:

• Wheaten: e/e at Extension locus (recessive red) or Ay/- at Agouti (sable/fawn). Genotype D/- (non-dilute) or d/d (blue dilute).
• Blue: Dilution genotype d/d. Can occur in any base color but appears as a silver-slate color rather than black.
• Brindle: Requires ky/ky at K locus and Agouti locus alleles that permit brindle striping. Must have functional E allele (E/- not e/e).

Color breeding considerations:

• Blue to blue breedings produce all blue puppies, but overuse of blue lines can reduce genetic diversity in this rare breed
• Wheaten is the most common color and genetically versatile
• Brindle breeding requires understanding both K locus and Agouti locus genetics
• There are no disqualifying colors in the breed standard

Health-linked color concerns:

• Blue (dilution): Color dilution alopecia is possible but rare in Glen of Imaal Terriers. The blue dilution gene itself is not associated with significant health issues in this breed, unlike some other breeds where dilution is linked to health problems.

Coat texture genetics: Harsh coat texture is dominant over soft coat, but genetic mechanisms are complex and not fully understood. Breeding two harsh-coated parents can still occasionally produce soft-coated puppies if both carry recessive alleles. Always prioritize harsh, wiry coat texture in breeding stock selection.

Selecting Breeding Stock

Selecting breeding stock in Glen of Imaal Terriers requires balancing conformation correctness with genetic health, temperament, and genetic diversity. With a small gene pool and limited breeding stock in North America, every breeding decision impacts the entire breed's future.

Conformation priorities:

• Correct achondroplastic front structure: The single most critical structural feature. Front should show proper bowing and angulation, not straight or stilted. Elbows should be free and flexible in movement.
• Strong, level topline: Powerful loin, no roaching or dipping. Topline should remain firm during movement.
• Adequate bone and substance: Maximum substance for size without coarseness. Should feel heavy and solid when handled.
• Harsh, weather-resistant coat texture: Wire-textured outer coat that is never soft or silky. Coat should strip properly for show or working.
• Sound movement fore and aft: Free, ground-covering movement despite dwarfed conformation. No hackney gait or stilted action.
• Proper head proportions: Strong underjaw, good breadth of skull, correct ear carriage (rose or half-prick)
• Correct ear carriage: Rose or half-prick; never fully prick or drop ears

Common faults to avoid:

• Stilted or hackney gait (often indicates incorrect front assembly)
• Weak or roached topline
• Soft, silky coat lacking harshness
• Insufficient substance and bone ("weedy" appearance)
• Timid or overly aggressive temperament
• Incorrect ear carriage (prick or drop ears)
• Lack of angulation in hindquarters

Temperament evaluation: Glen of Imaal Terriers should be bold, spirited, and courageous but not quarrelsome. Test for gameness without aggression. Evaluate for dog-dog tolerance, as some lines become dog-aggressive at maturity. Must be trainable, biddable, and gentle with people. Avoid timid or nervous individuals. Proper socialization from puppyhood is critical to prevent dog aggression issues that can emerge at maturity.

Genetic diversity considerations:

The Glen of Imaal Terrier has a dangerously small gene pool. The average coefficient of inbreeding (COI) in the breed is approximately 25%, which is extremely high. The target COI for individual litters should be under 10% to help reduce inbreeding depression and maintain genetic diversity.

COI management strategies:

• Use online COI calculators to evaluate prospective pairings before breeding
• Consider outcrossing to unrelated lines, even if it means geographic challenges
• Avoid repeat breedings unless exceptional and never more than twice
• Preserve rare bloodlines even if not currently competitive in the show ring
• Maintain detailed pedigree records going back at least 10 generations

Stud selection criteria:

• All required health clearances (hips, elbows, eyes, crd3 DNA test) with results publicly available
• Clear for crd3-PRA (clear to carrier breedings acceptable; avoid carrier to carrier)
• OFA Good or Excellent hips, Normal elbows
• Correct breed type and structure
• Proven producer of quality puppies (for experienced studs)
• Low COI relative to your female
• Temperamentally sound and stable

Stud fees: $800-$1,500, with most quality studs in the $1,000 range. Fresh chilled or frozen semen fees may include collection and shipping costs.

Whelping and Neonatal Care

Glen of Imaal Terriers typically whelp naturally without complications. The C-section rate is approximately 15%, which is moderate for a terrier breed. The achondroplastic structure can occasionally cause positional dystocia, but most bitches are capable natural mothers.

Whelping method: Natural whelping is the norm. Most Glen bitches whelp without assistance and are attentive, capable mothers. However, be prepared for emergency veterinary intervention if complications arise.

Breed-specific whelping considerations:

• Achondroplastic structure can occasionally cause positional dystocia if puppies are large or malpositioned
• C-section rate is approximately 15%, lower than many terrier breeds but higher than some non-dwarfed breeds
• Bitches are usually capable natural mothers with strong maternal instincts
• Monitor carefully for fading puppy syndrome in the first 48 hours; rare but can occur
• Heavy, low-slung conformation can make natural whelping challenging for first-time mothers; experienced supervision is recommended
• Have your veterinarian's emergency number readily available

Birth weights and early growth:

• Males: Average birth weight 8-11 ounces
• Females: Average birth weight 7-10 ounces

Puppies should gain 5-10% of body weight daily in the first 2 weeks, then 10-15% weekly thereafter. Puppies not gaining weight appropriately should be supplemented and evaluated by a veterinarian.

Monitoring protocol:

• Weigh puppies daily for the first 2 weeks, then every 2-3 days
• Track individual puppy weight gain; any puppy losing weight or failing to gain needs immediate attention
• Monitor for fading puppy syndrome: weakness, crying, failure to nurse, hypothermia
• Ensure all puppies are nursing within 1-2 hours of birth
• Keep whelping area warm (85-90°F for first week) and draft-free

Dewclaw, tail, and ear practices:

• Dewclaw removal: Not practiced; dewclaws are left natural
• Tail docking: Not practiced; tails are left natural
• Ear cropping: Not applicable

Glen of Imaal Terriers are a natural breed with no cosmetic alterations.

Puppy Development Milestones

Glen of Imaal Terrier puppies develop rapidly in the first 12 weeks and reach structural maturity between 12 and 18 months of age. Proper socialization during the critical window of 3-14 weeks is essential to prevent dog aggression issues that can emerge at maturity.

Weight and growth milestones:

• Birth: Males 8-11 oz, females 7-10 oz
• Week 1: Doubling of birth weight; eyes and ears still closed
• Week 2: Eyes and ears begin to open; weight continues to double
• Week 3: Puppies begin to walk and explore; teeth erupting
• Week 4: Fully mobile; beginning to interact with littermates
• Week 5-6: Gradual weaning begins; puppies eating softened puppy food
• Week 8: Average weight 10 lbs (males) / 9.2 lbs (females); ready for go-home
• Week 12: Average weight 16 lbs (males) / 15 lbs (females); first vaccination series complete

Socialization and temperament development:

• 3-14 weeks: Critical socialization window; expose puppies to varied people, sounds, surfaces, and experiences
• 8-10 weeks: Fear imprint period; avoid traumatic experiences
• 8-10 weeks: Go-home age; puppies should be confident, outgoing, and well-socialized
• Continue socialization through first year: Critical to prevent dog aggression that can emerge at sexual maturity

Structural evaluation timing:

• 12-16 weeks: Early structural evaluation for breeding and show potential
• 8-12 months: Final evaluation for show/breeding quality before placement decisions
• 12-18 months: Structural maturity achieved

Weaning: Begin gradual weaning at 5-6 weeks with softened puppy food. Puppies should be fully weaned by 7-8 weeks.

Go-home age: 8-10 weeks is standard, with 8 weeks being minimum. Some breeders prefer to keep show prospects to 10-12 weeks for further evaluation.

Puppy placement considerations:

• Evaluate each puppy for temperament, structure, and show/breeding potential
• Match puppies to appropriate homes based on temperament and owner experience
• Pet-quality puppies should be sold on AKC limited registration with spay/neuter contracts
• Show/breeding prospects should be co-owned or sold with breeding restrictions until health clearances are complete

Breeding Economics

Breeding Glen of Imaal Terriers is rarely profitable when all costs are properly accounted for. The breed's rarity, extensive health testing requirements, and small average litter size of 5 puppies mean that most breeders break even or operate at a loss. However, puppy prices reflect the breed's rarity and the significant investment required to produce healthy, well-socialized puppies.

Pre-breeding costs (per female):

• Health testing: $500 (hips, elbows, eyes, crd3 DNA)
• Optional health testing: $290 (cardiac, DM, thyroid)
• Show/performance titles: $1,000-$5,000+ (not included in per-litter breakdown)

Per-litter costs:

• Stud fee: $1,000 (typical for health-tested, titled stud)
• Progesterone testing: $600 (for optimal breeding timing; 3-4 tests at $150-$200 each)
• Prenatal care: $400 (veterinary exams, ultrasound, radiographs)
• Whelping costs (natural): $300 (supplies, emergency vet fund)
• Whelping costs (C-section): $1,500 (emergency or planned C-section)
• Puppy veterinary care: $750 (5 puppies × $150 for exams, vaccinations, deworming)
• Food and supplies: $400 (dam's prenatal nutrition, puppy food through 8 weeks, whelping supplies)
• Registration: $200 (AKC litter registration and individual puppy registrations)

Total cost per litter (natural whelping): Approximately $4,150

Total cost per litter (C-section): Approximately $5,350

Revenue:

• Pet-quality puppies: $2,500 average (limited registration, spay/neuter contract)
• Show/breeding-quality puppies: $3,500 average (full registration, breeding rights with restrictions)
• Average litter revenue (5 puppies at $2,500): $12,500

Financial analysis (5-puppy litter, natural whelping):

• Revenue: $12,500
• Costs: $4,150
• Net profit: $8,350

Financial analysis (5-puppy litter, C-section):

• Revenue: $12,500
• Costs: $5,350
• Net profit: $7,150

Important considerations:

• These figures assume a healthy litter of 5 puppies that survive to placement age
• Smaller litters (3-4 puppies) significantly reduce revenue while costs remain nearly the same
• Fading puppy syndrome, congenital defects, or neonatal losses can dramatically reduce revenue
• Costs do not include the breeder's time (hundreds of hours per litter), facility costs, puppy socialization materials, advertising, or the initial purchase price of breeding stock
• Show campaigns to finish championships can cost $5,000-$20,000+ per dog
• Emergency veterinary care during pregnancy or whelping can add $1,000-$3,000+
• The small gene pool often requires long-distance breeding (travel or AI shipping costs)

Reality check: Most responsible Glen of Imaal Terrier breeders are not making significant profit. The primary motivation is breed preservation, not income. Puppy sales typically cover direct costs but rarely compensate for the breeder's time, facility investment, and the emotional investment in each litter.

Breeder Resources

Parent Club:

Glen of Imaal Terrier Club of America (GITCA) - The official AKC parent club for the breed. GITCA provides extensive breeder resources including:

• Code of Ethics for breeders (mandatory CHIC testing, breeding age restrictions, maximum litters)
• Breeder directory and stud dog listings
• Health and genetics resources including crd3-PRA information
• Breed education materials and mentor program
• Annual national specialty show

AKC Breeder Programs:

• AKC Breeder of Merit: Recognizes dedicated breeders who health test, title their dogs, and follow best practices
• AKC Bred with H.E.A.R.T.: Health, Education, Accountability, Responsibility, Tradition program for responsible breeders

Regional Clubs: GITCA is the primary club; regional terrier clubs may include Glen of Imaal Terriers in their activities.

Recommended Books:

• The Complete Glen of Imaal Terrier by Ann Comb Curran - Comprehensive breed history and standard interpretation
• Glen of Imaal Terrier (Comprehensive Owner's Guide) by Alice van Kempen - Breed-specific care and breeding guidance

Online Communities:

• Glen of Imaal Terrier Club of America Facebook Group - Active community of owners and breeders
• GITCA Health and Genetics Discussion Forum - Technical discussions of breed health issues

Essential Health Resources:

• OFA (Orthopedic Foundation for Animals): www.ofa.org - Hip, elbow, eye, and cardiac clearance database
• CHIC (Canine Health Information Center): www.caninehealthinfo.org - Centralized health testing database
• CIDD (Canine Inherited Disorders Database): cidd.discoveryspace.ca - Research database for hereditary conditions
• UC Davis VGL: www.vgl.ucdavis.edu - Genetic testing including coat color and DM

Finding a Mentor: The Glen of Imaal Terrier community is small and close-knit. GITCA maintains a mentor program connecting new breeders with experienced mentors. Attending the national specialty and regional shows is essential for building relationships within the breed community.

Frequently Asked Questions

How many puppies do Glen of Imaal Terriers typically have?

Glen of Imaal Terriers average 5 puppies per litter, with typical litter sizes ranging from 3 to 7 puppies. The most common litter size is 5 puppies (30% of litters), followed by 4 puppies (25%) and 6 puppies (20%). Smaller litters of 3 puppies occur in about 15% of breedings, while larger litters of 7 puppies are less common at 10%.

Do Glen of Imaal Terriers need C-sections?

Glen of Imaal Terriers have a C-section rate of approximately 15%, which is moderate for a terrier breed. Most Glens whelp naturally without complications, though the achondroplastic structure can occasionally cause positional dystocia requiring surgical intervention. Unlike brachycephalic breeds where planned C-sections are routine, natural whelping is the norm for Glens with C-sections typically being emergency procedures rather than planned.

What health tests are required for breeding Glen of Imaal Terriers?

CHIC requires four mandatory health tests: Hip Dysplasia evaluation (OFA or PennHIP), Elbow Dysplasia evaluation (OFA), Eye Examination (CAER/ACVO) repeated every 2 years, and the Cone Rod Dystrophy 3 (crd3) DNA test. Total initial testing costs approximately $500 per dog. Additional recommended tests include cardiac evaluation, Degenerative Myelopathy DNA test (GITCA is conducting a prevalence study 2025-2026), and thyroid panel, adding approximately $290 if all are performed.

How much does it cost to breed Glen of Imaal Terriers?

A typical Glen litter costs approximately $4,150 for a natural whelping or $5,350 for a C-section delivery. Major costs include health testing ($500), stud fee ($1,000), progesterone testing ($600), prenatal veterinary care ($400), whelping costs ($300-$1,500), puppy veterinary care ($750 for 5 puppies), food and supplies ($400), and registration ($200). These figures do not include the breeder's time, facility costs, or show campaigns to title breeding stock.

At what age can you breed a Glen of Imaal Terrier?

Females should not be bred before 2 years of age to allow for complete health clearances and structural maturity. Males can begin stud service at 18 months minimum with all health clearances complete. OFA hip and elbow radiographs cannot be performed until 24 months of age, and the crd3 DNA test must be completed before any breeding. The GITCA Code of Ethics mandates these minimum breeding ages and requires retirement by age 8 with a maximum of 4 lifetime litters per female.

How much do Glen of Imaal Terrier puppies cost?

Pet-quality Glen of Imaal Terrier puppies from health-tested parents typically cost $2,500, while show/breeding-quality puppies average $3,500. The breed's rarity, extensive health testing requirements, and small litter sizes contribute to these prices. Puppies should come from parents with complete CHIC clearances (hips, elbows, eyes, crd3 DNA), be well-socialized, and include health guarantees and AKC registration.

What are the most common health problems in Glen of Imaal Terriers?

The most significant health concerns are Cone Rod Dystrophy 3 (crd3-PRA), a breed-specific form of progressive retinal atrophy causing eventual blindness; Hip Dysplasia (30% prevalence but usually asymptomatic due to the breed's structure); Allergies/Atopic Dermatitis (common in some lines); and Elbow Dysplasia (low to moderate prevalence). Premature Closure of Distal Ulna (PCDU) is rare but serious when it occurs. Degenerative Myelopathy prevalence is currently unknown, with GITCA conducting a breed-wide study in 2025-2026.

Is breeding Glen of Imaal Terriers profitable?

Breeding Glen of Imaal Terriers is rarely profitable when all costs are properly accounted for. With an average 5-puppy litter generating $12,500 in revenue against $4,150-$5,350 in direct costs per litter, the apparent profit of $7,150-$8,350 must cover the breeder's hundreds of hours of time, facility costs, show campaigns ($5,000-$20,000+ per dog), and the initial investment in breeding stock. Most responsible breeders break even or operate at a loss. The primary motivation should be breed preservation, not profit.

What is the coefficient of inbreeding (COI) in Glen of Imaal Terriers?

The average COI in Glen of Imaal Terriers is approximately 25%, which is dangerously high and reflects the breed's small global gene pool. Responsible breeders should target a COI under 10% for individual litters to reduce inbreeding depression and maintain genetic diversity. This often requires breeding to unrelated or distantly related lines, which can be challenging given the limited number of breeding animals in North America. Long-distance breeding arrangements and imported genetics are sometimes necessary to achieve acceptable COI levels.

What is crd3-PRA and why is DNA testing mandatory?

Cone Rod Dystrophy 3 (crd3-PRA) is a breed-specific form of progressive retinal atrophy unique to Glen of Imaal Terriers. It is an autosomal recessive condition causing progressive vision loss beginning with day blindness (difficulty in bright light), advancing to night blindness, and eventually complete blindness. Age of onset is typically 3+ years. DNA testing is mandatory before breeding to prevent producing affected puppies. Clear dogs can be bred to clear or carrier dogs safely; carrier to carrier breedings should never be performed as 25% of offspring will be affected. Affected dogs should never be bred.

Why is artificial insemination common in Glen of Imaal Terriers?

The geographic dispersion of quality breeding stock across North America makes natural breeding logistically difficult for many breeders. With a small gene pool and the need to maintain genetic diversity by breeding to unrelated lines, breeders often must use studs located hundreds or thousands of miles away. Fresh chilled and frozen AI have become common solutions, allowing breeders to access quality studs nationwide without the stress and expense of transporting bitches in heat for natural breeding. The breed responds well to properly timed AI protocols.