Weight: Female: 18–23 kg, Male: 23–25 kg
Height: Female: 31–40 cm, Male: 31–40 cm
Colors: White, Fawn, Piebald, Brindle & White, Fawn & White, Red Brindle, Red, Red & White
Life span: 8 – 10 years
According to the American Kennel Club (AKC), a Bulldog's disposition should be "equable and kind, resolute, and courageous (not vicious or aggressive), and demeanor should be pacific and dignified. These attributes should be countenanced by the expression and behavior".
Breeders have worked to reduce/remove aggression from these dogs. Most have a friendly, patient, but stuborn nature. Bulldogs are recognized as excellent family pets because of their tendency to form strong bonds with children.
Generally, Bulldogs are known for getting along well with children, other dogs, and pets.
A 2004 UK survey of 180 Bulldog deaths puts the median age at death at 6 years 3 months. The leading cause of death of Bulldogs in the survey was cardiac related (20%), cancer (18%), and old age (9%). Those that died of old age had an average lifespan of 10 to 11 years. A 2013 UK vet clinic survey of 26 Bulldogs puts the median lifespan at 8.4 years with an interquartile range of 3.2–11.3 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.