T rex had body temperature of 36.3°C, almost the same as humans

A new study published in Science Advances has shed light on the body temperature of the Tyrannosaurus rex, revealing that it was remarkably close to that of modern humans at an average of 36.3°C (97.3°F). Researchers used a technique called clumped isotope analysis, which measures temperature signals preserved in the enamel of dinosaur teeth, to determine this temperature.

This breakthrough provides direct evidence that T. rex was a warm-blooded, high-energy predator capable of thriving in various environments, from ancient floodplains to cooler high-latitude regions. The findings challenge previous assumptions about T. rex's physiology and lifestyle, suggesting that the dinosaur had a stable, high metabolism that supported fast growth and sustained activity, allowing it to dominate its ecosystem across prehistoric North America.

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