Bull Terrier Dog BreedingFind the Perfect Match

Lethal acrodermatitis (LAD) is a fatal genetic condition unique to Bull Terriers that appears by 4 weeks of age. Affected puppies show stunted growth, splayed toes, severe skin lesions, and rarely survive past 2 years. It's inherited as an autosomal recessive trait, meaning both parents must be carriers. DNA testing is MANDATORY for all breeding stock. Never breed two carriers together - this would produce 25% affected puppies. Carriers bred to clear dogs produce only carriers and clear puppies, preventing this devastating disease.

Hereditary nephritis causes progressive kidney failure in Bull Terriers. Early onset form appears by age 3 and is fatal by 5 years. Late onset develops after age 5. Testing includes annual UPC ratio starting at 18 months to monitor protein levels, plus DNA testing for hereditary nephritis gene. Signs include excessive thirst, weight loss, and lethargy. Affected dogs should NEVER be bred. Regular monitoring throughout breeding career is essential as kidney values can change with age.

Deafness in white Bull Terriers is linked to lack of pigmentation in the inner ear structures. 20% of white Bull Terriers are born deaf in one or both ears, compared to only 1.3% in colored varieties. BAER (Brainstem Auditory Evoked Response) testing is MANDATORY for all breeding stock and should be done on puppies at 5-6 weeks. Unilateral (one ear) deaf dogs can live normal lives but shouldn't be bred. Bilateral deaf dogs require experienced homes with special training methods.

Bull Terriers are prone to mitral valve disease and aortic stenosis. Symptoms include exercise intolerance, coughing, fainting, and heart murmurs. All breeding stock requires echocardiogram evaluation by a cardiologist. Annual auscultation is recommended as heart disease can develop with age. Dogs with any cardiac abnormalities should not be bred. Early detection through proper screening helps identify affected dogs before breeding and ensures healthier bloodlines.

Patellar luxation (kneecap dislocation) affects approximately 7% of Bull Terriers. It's graded 1-4 in severity, with grades 3-4 requiring surgical correction. OFA patella evaluation is mandatory for all breeding stock. Dogs with Grade 2 or higher should not be bred. The condition can cause arthritis, lameness, and chronic pain if untreated. Check parents and siblings for history as there's a hereditary component. Early detection prevents passing this painful condition to offspring.

Bull Terriers are prone to compulsive behaviors including tail chasing (spinning), shadow chasing, fly snapping, and compulsive licking. These behaviors often have a hereditary component and can become severe enough to interfere with normal life. Triggered by stress, boredom, or anxiety, they're difficult to treat once established. Never breed dogs exhibiting compulsive behaviors. Select for stable temperaments and ensure proper early socialization. The breed's terrier heritage and original fighting dog purpose require careful temperament selection.

Primary lens luxation (PLL) causes the lens to dislocate from its normal position, leading to glaucoma and blindness. It typically appears between 3-8 years of age and causes severe pain and vision loss. DNA testing is available and recommended for all breeding stock. Carriers can be safely bred to clear dogs (producing 50% carriers, 50% clear). Affected dogs experience extreme pain and require immediate veterinary attention. Regular eye exams help catch early signs before complete luxation occurs.

White Bull Terriers are particularly prone to skin issues including severe sun sensitivity requiring sunscreen and shade, contact dermatitis from grass and plants, environmental and food allergies, zinc deficiency causing crusty skin, and bacterial infections (hot spots). Their lack of pigmentation makes sun protection essential - they can develop skin cancer. Select breeding stock with good pigmentation around eyes and nose. Healthy skin and coat should be breeding priorities to reduce these issues in offspring.

Mandatory genetic testing includes: BAER hearing test (especially for whites), annual UPC ratio for kidney function, hereditary nephritis DNA test, lethal acrodermatitis DNA test, heart evaluation via echocardiogram, OFA patella evaluation, and annual CERF/OFA eye exams. Additional recommended tests include primary lens luxation DNA test, polycystic kidney disease screening, and complete blood panels. Comprehensive testing typically costs $1,200-1,800 per dog but is essential for ethical breeding and improving breed health.

Bull Terriers were originally bred in 1800s England as fighting dogs, created by crossing Bulldogs with the now-extinct White English Terrier. Known as the 'gladiator of terrier breeds,' they retain strong prey drive and potential dog aggression. This heritage requires experienced owners who understand terrier temperament. Not suitable for first-time dog owners. Early socialization is critical. Despite their fighting past, properly bred and raised Bull Terriers are devoted family companions with unique personalities, though they require firm, consistent training.