a lot like birds live

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Dinosaur Brains and Lungs

Fossilized dinosaur bones, eggs, and feathers offer clear signs that these extinct animals and living birds are tightly linked. But this kinship, on display in Dinosaurs Among Us, goes much deeper. High-tech views inside fossils and close study of birds and their closest living relatives, crocodiles, reveal the inside story: some features of the insides of dinosaurs were a lot like the insides of living birds and crocodiles.