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Tyrannosaurus rex was a cannibal, scientists have found, after studying massive gouges in T. Rex bones that could only have been made by the mighty jaws of another T. Rex. Researchers say the predator may have regularly eaten his fellow T. Rexes, but it’s unclear whether the morbid snack was indulged in after a fight to the death. It’s possible that T. Rex just ate his relatives’ corpses. Many modern reptilian predators eat members of their own species, including the Komodo dragon and the crocodile, who eat their kids from time to time. Pigs also eat dead pigs. In other cannibalistic reptile news, scientists think the 30-foot-long Majungatholus atopus might have fed on his own species.