Those that died of old age had an average lifespan of 10 to 11 years. The UK Bulldog Breed Council website lists the average life span of the breed as 8–10 years.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 amongst 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. Patellar luxation affects 6.2% of Bulldogs.Some individuals of this breed are prone to interdigital cysts—cysts that form between the toes. In 2014 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.
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