In 1898 the United Kennel Club (UKC) was founded by American Pit Bull fanciers who wished to establish pedigrees and record bloodlines for the dogs born in the US. One of the founders, C. Z. Bennett, assigned U.K.C. registration number 1 to his own APBT, Bennett's Ring in 1898. From that moment on, cross-breeding was no longer accepted, as had often been the case before that.
During the "Great Depression of the 1930's" the American Kennel Club added American Pit Bull Terriers to their registry under the name of Staffordshire Terriers. With this new name for the breed, they needed a standard. After visiting a few kennels, a committee headed by Wilfred T. Brandon chose Colby's Primo as a standard for the breed.
Other breeders continued to register their dogs with the UKC and the ADBA. The UKC adopted a standard very similar to the AKC one.
Still today some fanciers of these dogs consider the American Pit Bull Terrier the working type and the Amstaff the show type of one and the same breed.
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for semi-wild cattle and hogs, to hunt, to drive livestock, and as family companions.
