Scientists estimate that Tyrannosaurus rex had a body temperature close to that of modern humans, based on analysis of fossilised teeth. The research is aimed at resolving a longstanding question about whether dinosaurs were warm-blooded and how precisely they could regulate their internal temperature.
The findings build on earlier evidence that many dinosaurs likely had warm-blooded biology rather than being sluggish, cold-blooded animals. However, directly measuring an extinct animal’s core temperature is difficult, so the new work uses teeth as a proxy to infer thermal characteristics. While there is broad agreement that T. rex was likely warm-blooded, the main focus of the newer study is narrowing the estimate of how close its temperature was to that of living mammals.
Across the outlets, the central message is consistent: the study suggests T. rex maintained a temperature broadly similar to ours. Differences in coverage are mainly in phrasing and emphasis, not in the core result.
