Never had a bull that I wanted to pet but have had 3 bulls that would self load in the middle of the pasture. These were bulls that I raised and I would throw cake in the trailer when they were young, Now all I have to do is open the gate and the one I have now will walk in. Still don't pet him and don't allow anyone else in the pen or pasture with him. While I will hand feed the cows, he gets his on the ground. When I pull the trailer in the pasture, he comes running.