This is "Brutus," a 5.5-meter-long Australian saltwater crocodile in the Adelaide River. He apparently is something of a celebrity, easily recognized by the absence of his right front leg, and eager for the buffalo meat offerings presented to him during tourist cruises.
Photo credit: Katrina Bridgeford / Rex Features, via The Telegraph.
Marginally related: "Alligator forceps" should be called "crocodile forceps."