answersLogoWhite

0

I think it's because the way our body is formed from the so called, "First humans" on earth. and by that, the first humans have to be warm blooded to keep warm. they didn't have lots of shelter, and so they had to be warm. They did have hair, but they needed more than that. That's how our body works. But it is not important that mammals have to be warm blooded.

User Avatar

Wiki User

10y ago

What else can I help you with?