History and Facts: Originally used for bullbaiting, these dogs immigrated from England to the U.S. with their masters. (bil-jac.com)
These pups were originally bred for a bloody sport called bullbaiting. (topdogtips.com)
The illustrated AKC Bulldog standard, a wonderful document that brings every detail of the breed into sharp focus, calls the undershot jaw «the Bulldog's most unique physical characteristic,» and affirms that it is a result of form following function, as this characteristic allowed a «lockjaw» hold on the bull's flesh when the breed fulfilled its original use of bullbaiting. (americanshihtzuclub.org)