T. rex teeth indicate it ran as warm as an elephant

For most of the last century, T. rex was pictured as a sluggish, tail-dragging reptile that had to warm up in the sun before it could go anywhere. Then, further research changed that view, replacing i

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1. 2026-09-20 17:00
   Ars Technica T. rex teeth indicate it ran as warm as an elephant

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