When he was younger, my dad lived next to a guy who owned a bunch of exotic animals. The guy was kind of nutty and a raging alcoholic. He'd go weeks without feeding the animals, a lot of them were sick and dying, and he would be torture and abuse some of them. One of his animals was a little chimpanzee, which he took great pleasure in constantly tormenting in a drunken rage. The guy went missing for a few days and finally the police came to investigate. They had to break into the house, as the guy was completely delusional and paranoid, keeping his house locked tighter than a safe. They found him, dead, his head crushed to the point that he was barely recognizable. They found a bloody smashed lamp with peculiar fingerprints on it. And who did they belong to? His chimp. The guy had apparently passed out drunk one night, and the chimp beat his head in with a lamp.