The United Kennel Club (UKC) was the first registry to recognize the American pit bull terrier.[12] UKC founder C. Z. Bennett assigned UKC registration number 1 to his own dog, "Bennett's Ring", as an American pit bull terrier in 1898. American pit bull terriers successfully fill the role of companion dog, police dog,and therapy dog.Terriers in general have a higher tendency towards dog aggressionand American pit bull terriers constitute the majority of dogs used for illegal dog fighting in the United States. In addition, law enforcement organizations report these dogs are used for other nefarious purposes, such as guarding illegal narcotics operations,use against the police,and as attack dogs.
