The first hot-blooded dinosaurs appeared 180 million years ago
A new study reveals the ability to regulate body temperature -- a trait that all mammals and birds today possess,
![](https://whatco.me/media/cache/resolve/entry_thumb/53/f4/53f48e2240e067e8e8ecb2361e6760dbfba7a3d0f81892ca6a9c8b1da33e199e.png)
A new study reveals the ability to regulate body temperature -- a trait that all mammals and birds today possess,