Lifespan A 2022 study in the UK of veterinary data found a life expectancy of 7.39 years, the second lowest of all breeds in the study. A 2024 UK study found a life expectancy of 9.8 years for the breed compared to an average of 12.7 for purebreeds and 12 for
crossbreeds. A 2004 UK survey found the leading cause of death of Bulldogs to be cardiac-related (20%), cancer (18%), and old age (9%).
Brachycephaly The shortened snout and pushed in face of the Bulldog is known as
brachycephaly. Brachycephaly results in deformation of the upper airway tract and leads to obstruction of breathing. Effects of brachycephaly are
stridor, stertorous breathing,
emesis,
skin fold dermatitis,
brachycephalic airway obstructive syndrome,
exophthalmos,
pharyngeal gag reflex,
cyanosis, and laryngeal collapse. Other issues arising from brachycephaly are risk of complications while under anaesthesia, and
hyperthermia — with the latter caused due to an inability to effectively reduce body temperature via panting. Many airlines ban the breed from flying in the cargo hold due to a high rate of deaths from air pressure interacting poorly with their breathing problems.
Other conditions A study by the Royal Veterinary College found that Bulldogs are a much less healthy breed than average, with over twice the odds of being diagnosed with at least one of the common dog disorders investigated in the study. Statistics from the
Orthopedic Foundation for Animals indicate that of the 467 Bulldogs tested between 1979 and 2009 (30 years), 73.9% were affected by
hip dysplasia, the highest among all breeds. Similarly, the breed has the worst score in the British Veterinary Association/Kennel Club Hip Dysplasia scoring scheme, although only 22 Bulldogs were tested in the scheme. A study in England found the Bulldog to have a nearly three times greater risk of
patellar luxation, with 2.9% of all Bulldogs having the condition. It is the dog breed that has been found to most often suffer from
swimmer puppy syndrome, where the back legs are spread-eagled. In a 1963 UK study, 17% of Bulldogs surveyed had
skin fold dermatitis. The breed is also predisposed to
atopic dermatitis. A British study found
demodicosis to be more prevalent in the Bulldog than other breeds. The overall prevalence was 1.5% in the breed compared to the 0.17% rate for all dogs. For dogs aged under 2 years, the prevalence was 3.6% compared to 0.48%. Over 80% of Bulldog litters are delivered by
Caesarean section because their characteristically large heads can become lodged in the mother's birth canal and to avoid potential breathing problems for the mother during labour. The Bulldog is one of the two most commonly affected breeds for
hiatal hernia.
Controversies and legal status of
British culture; this is a bulldog on a
British flag. In January 2009, after the BBC documentary
Pedigree Dogs Exposed,
The Kennel Club introduced revised breed standards for the British Bulldog, along with 209 other breeds, to address health concerns. Opposed by the British Bulldog Breed Council, it was speculated by the press that the changes would lead to a smaller head, fewer skin folds, a longer muzzle, and a taller thinner posture, to combat problems with respiration and breeding due to head size and width of shoulders. In 2019 the
Dutch Kennel Club implemented some breeding rules to improve the health of the Bulldog. Among these is a fitness test where the dog has to walk 1 km (0.62 miles) in 12 minutes. Its temperature and heart rate have to recover after 15 minutes. In 2014, the
Dutch government forbade the breeding of dogs with a snout shorter than a third of the skull, including Bulldogs, a law that it began enforcing in 2019. In 2022, the
Oslo District Court made a ruling that banned the breeding of Bulldogs in Norway due to their propensity for developing health problems. In its verdict the court judged that no dog of this breed could be considered healthy, therefore using them for breeding would be a violation of Norway's Animal Welfare Act. The ban on breeding Bulldogs was overturned by Norway's
Borgarting Court of Appeal, which ruled that it was legal to breed English bulldogs in Norway. == Cultural significance ==