Dr. Paul M. Gignac of New York’s Stony Brook University School of Medicine uses a force meter to measure the strength of a 12-foot American alligator’s jaws. A study of 83 animals revealed that alligators and crocodiles have comparable bites, capable of killing with up to 3,700 pounds of force. Ancient related species were found to have been even more powerful - more so, in fact, than even Tyrannosaurus rex. (Jørn Hurum)

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