What is it about cold blooded animals such as reptiles and amphibians that makes it so that they can’t regulate their own temperature? Doesn’t their metabolism produce heat in the same way that warm blooded animals do?
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It’s not that their metabolism doesn’t produce heat, it’s that their bodies aren’t equipped to keep their temperature at a specific range.
When you get cold, you shiver. When you get hot, you sweat. Your body has functions to keep your own temperature at a given range.
When a lizard gets cold, it has to *move into a warm spot*. When it gets hot, it has to *move towards a cooler spot*. They rely on external conditions to regulate their temperature. Granted, they are using their own body to move towards warm/cold areas, but we can do that as well, in addition to our own bodies helping to regulate the temperature.
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