Have you ever owned a pit bull?  They are sweet dogs, but they get really big.
Pit bull
Pit bull is the common name for a type of dog descended from bulldogs and terriers. The pit bull-type is particularly ambiguous, as it encompasses a range of pedigree breeds, informal types and appearances that cannot be reliably identified. Formal breeds often considered to be of the pit bull-type include the American Pit Bull Terrier, American Staffordshire Terrier, American Bully, and Staffordshire Bull Terrier. The American Bulldog is also sometimes included. Mixed-breed dogs which physically resemble these breeds often get labelled
information on pit bull regulations in Military Housing and in over 900 cities. Lynn claims they support laws that specifically regulate pit bulls, not just because of the fatalities caused, but because of the nature of the injuries and severity of the attacks. Lynn also said that even though pit bulls are a minority of dogs owned, they were responsible for 64% of the deaths in 2014. 
The American Veterinary Medical Association, and other organizations have published positions opposing breed-specific legislation (BSL).
Criticism.