they are easy to train but anything bigger is usually considererd a challenge and what does a bull do in a challenge... it moves forward and what does he do when it (or both) get hold of sheep or a cow or horse or worse some dog walkers family pet you get away with it and headline is pit bull terrier savages cattle its the breed that gets blamed. you say you ownwed a "pitty" you should know this being the responsable owner you are!
my old bullx was stock brocken and the nices bitch i ever had better than my whippet x greyhound