Bull Terrier - The AKC's site, giving the official breed standard, and useful links.
Bull Terrier Health Society - Society is dedicated to the health of the Bull Terrier. Health information provided in form of Web pages or PDF documents.
Bull Terrier Health UK - Find tested stud dogs and litters from tested stock. This site has information on Heart, kidney, BAER testing along with other health issues.
Bull Terrier Information - Guidance on Bull Terrier breeders, general informational links, rescues, clubs, and pictures of puppies.
Bull Terrier Neurological Disorder Resources - Information about spinning/tail-chasing and other canine compulsive disorders, as well as Sudden Onset Aggression, and the Tufts studies on Bull Terrier tail chasing.