They will take on anything. I wouldn't be surprised to see one take on a charging bull. They have no fear and I'm sad to see that the brave little dog didn't survive.

My son says that I overreact but I think that the owner of these dogs should be put in a cage with them and others that he/she doesn't know.

I have a mixed breed dog (Dobie, Rhottie and Pit Bull) and she wouldn't dream of hurting anything else. The only thing I had to teach her was not to jump on people because she wanted to play. For the most part Pit Bulls are defensive and have to be taught to be mean.