McClellan wasn't just into dog fighting he was sadistic.

His own relations described him as - frightening and extremely violent.

He would buy dogs from the pet shop, tape their mouths shut and let his pitbull rip them to bits. He shot his dog for losing a fight.

His former coach described the pleasure McClellan got from running over and killing a Flamingo bird at a shopping mall... so much so that he continued to circle the place killing loads of them.

I don't think any of this means he deserved to end up brain damaged. But he was a sicko.