What Happens When You Overcrowd Rats?

Manson's parole officer was studying the influence of lsd on human behavior. Lads were trying to see what would happen to a population of rats if they overcrowded them. They found that when he overcrowded the rats in his research, really strange things started to happen. You had one dominant male surrounded by adoring females. And you also saw uncharacteristically psychopatic behavior in certain rats. For no reason, certain rats would attack other rats in their sleep and rip their bodies apart. It just seems really folk and weird.