Humans love animals but sometimes the consequences of getting too close can be fatal. Here are the stories of wild animals that become almost killers. A Texan man's visit to an African chimp sanctuary becomes a deadly struggle when he and his guide are attacked by the colony's escaped alpha male. A 600-pound Siberian tiger breaks free and pursues one of the organizers, a man is attacked by lions whilst trying to treat a member of the pride, and a hyena attacks a campsite causing havoc.
