Scientists finally figured out the temperature of T. rex's blood — and it was as hot as ours
Tooth analysis has revealed that the king of the dinosaurs was as warm-blooded as a human or an elephant
Researchers have determined that the body temperature of Tyrannosaurus rex was comparable to that of a human or an elephant, at around 97.3 degrees Fahrenheit (36.3 degrees Celsius). This finding challenges the common notion that T. rex was a sluggish, sun-seeking dinosaur, instead suggesting it was a fast, energetic predator. The temperature was calculated by analyzing the rare isotopes of carbon and oxygen found in the enamel of three T. rex teeth from the Hell Creek Formation in Montana.
The study, published in Science Advances, indicates that T. rex, a member of the dinosaur lineage that gave rise to modern birds, had already evolved to be warmer-blooded than cold-blooded dinosaurs like Triceratops and Stegosaurus.
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