Science Did T. rex play with its food?

Patterns of bite marks on bones chomped on by tyrannosaurids are consistent with play behavior exhibited by modern animals, says one paleontologist.

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Dan Pelle/The Spokesman-Review/AP

Tyrannosaurus rex, the seven-ton, dagger-toothed, Cretaceous-period killing machine, may have had a playful side, according to a University of Kansas paleontologist.