T. rex Blood Warmth Suggests a Fast, Active Predator
TL;DR Summary
UCLA researchers used a refined isotope analysis of Tyrannosaurus rex tooth enamel to estimate a body temperature around 97.3°F (±4.5), similar to humans. The finding supports a warm-blooded metabolism and the possibility of sustained activity, implying T. rex may have been a fast predator or scavenger rather than a slow ambush hunter; results were published in Science Advances and include comparative data from ancient crocodiles (about 88°F).
- Scientists Discover T. Rex Blood Was As Hot As Human Blood, Suggesting They Were Fast-Running Predators Jalopnik
- T. Rex, King of the Dinosaurs, Had a Body Temperature of 97 Degrees The New York Times
- T. rex had a body temperature similar to our own, study finds PBS
- T. rexes were as warm-blooded as elephants, study finds CBC
- Tyrannosaurus rex teeth reveal a body temperature close to the human average Phys.org
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