That's not completely true. "A celebrated Bull and Terrier named "Billy", weighing approximately 26 pounds, had a proud rat-baiting career crowned on April 22, 1823, when a world record was set with a hundred rats killed in five-and-a-half minute. In his prime and at the time, he was the greatest ratting dog known." The history of our breed before it was a breed, wasn't completely linear. There was no doubt some over lap in what type of dogs were used for what activities, just as there are now...