Although pit bulls were all created with similar crossbreeding between bulldogs and terriers, each individual breed within the type has a distinct history. The US Humane Society estimates that there are over 79.2 million owned dogs in the United States; however, the number of pit bull-type dogs has not been reliably determined.
Rear view of a Hairless Mixed-breed dog, mix between a French bulldog and a Chinese crested dog, sitting in front of white background. Description from dreamstime.com. I searched for this on bing.com/images