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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; Idaho Zoo's 'Feast for the Beast' fundraiser takes a bloody turn when a 600-pound Siberian tiger breaks free and pursues one of the organisers; and, a police officer faces an angry bull when the animal escapes from a 'bloodless' Massachusetts bullfight and goes on a rampage.

A river guide capsizes and is nearly swallowed by a hippo; a crocodile attacks an Australian cop while he's scuba diving; and a man trying to retrieve golf balls from a lake ends up wrestling with an alligator.

A great white shark bites an Australian diver; a triathlete training off the coast of Alabama is attacked by a shark.