Aggression? I had a neutered male pit. Damn aggressive, from Fighting stock. Great watch dog.
Anyway, I'd work him on hanging tires and stuff. One day I gave him a couple D'bol , figured he'd really
rip ass at the goodyear... He just sat there under his tire w/ happy dog face and hung out panting.
Very strange, he loved to work the tire. It was not he didn't feel well or anything, it was like he felt too good to fight.