All puppies should be checked for deafness, which occurs in 20% of pure white dogs and 1.3% of dogs and is difficult to notice, especially in a relatively young puppy. Many Bull Terriers have a tendency to develop skin allergies. Insect bites, such as those from fleas, and sometimes mosquitoes and mites, can produce a generalized allergic response of hives, rash, and itching. This problem can be stopped by keeping the dog free of contact from these insects, but this is definitely a consideration in climates or circumstances where exposure to these insects is inevitable. A UK breed survey puts their median lifespan at 10 years, with a good number of dogs living to 10-15 years.
