T. rex more hyena than lion: Tyrannosaurus rex was opportunistic feeder, not top predator, paleontologists say

Was T. rex really the king of the forest? A new census of dinosaurs in Montana's Hell Creek Formation shows that T. rex was far too abundant to be a top predator. Paleontologists argue that T. rex probably subsisted on a broad variety of dead as well as live animals, much like today's hyena.

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