Serial killers may have a childhood history of abusing or torture animals while showing no remorse. Well the parents of a seven year old Australian boy who went on a killing spree after breaking into the local zoo should be on the look out. He bashed some expensive lizards to death with a rock. He also fed live animals to the zoo’s crocodile; climbing over the outer fence to get up close and personal with the croc. Zoo administrators threatened to sue the parents of the youth. Where is the parental supervision? Steve Irwin the crocodile hunter is probably rolling in his grave.