温血动物
6.wingless usually flattened blood-sucking insect parasitic on warm-blooded animals.
7.Some warm-blooded animals, like the cat , the dog or the wolf, do not need to hibernate.
8.Modern warm-blooded animals have relatively larger brains than living cold-blooded animals.
9.Modern warm-blooded animals tend to have more erected postures than cold-blooded animals.
10.There is probably no evidence that would definitively prove whether or not some dinosaurs were warm-blooded.
