The vast majority of pit bulls are loving, loyal and make great pets. The problem is if they do attack, they tend to not want to quit attacking. I used to schutzhund train and our club was open to training any breed, we even had a border collie do it for fun. The catchers didn’t let pit bulls do it because the way they tend to bite and re-bite wasn’t safe for the dog or catcher. Even with my American Bull dog at the time, they asked to see when the last breeding with a pit in her breeding line was just to be safe, and they were more cautious in the beginning with her than the shepard’s, rotts, malinois and dobies.