Some Dinosaurs Were Warm-Blooded Like Modern Birds and Mammals
Dinosaur

Some Dinosaurs Were Warm-Blooded Like Modern Birds and Mammals

For decades, dinosaurs were assumed to be cold-blooded like modern reptiles. However, evidence from bone growth rings, feather insulation, and metabolic studies now shows that many dinosaurs — particularly theropods and ornithopods — had elevated metabolic rates and could regulate body temperature. A 2014 study in Science placed dinosaurs metabolically between cold-blooded reptiles and fully warm-blooded mammals.

Source

Grady, J.M. et al. (2014). Evidence for mesothermy in dinosaurs. Science, 344(6189).

Details

Published
April 21, 2026
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DinosaurDinosaursBiologyEvolutionPaleontology

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