I am sure there are a few but I am purist when it comes to the breed. The creators of this breed never meant for it to be this way. I dont think the breed in general has the right software to run a protective temperament. At least the true pit dogs are culled if they are HA. I guess nobody knows until you are in the situation to see if your dog will attempt to protect you. I am sure any breed will jump at someone trying to hurt you, the important fact is whether they can stick around and pursue the target if they are getting hurt. I rather have a dog straight out of the box that is suspicious of strangers or territorial and harness it and train obedience to it. Instead of starting off with a dog that was bred to love people. That is just me because I am on that side of the fence when it comes to pit breeds.