Cold-blooded
A cold-blooded animal is one that can't keep itself warm without the help of the external environment. They may use the sun to warm themselves up or water to cool themselves down. All reptiles and amphibians are cold-blooded.
A cold-blooded animal is one that can't keep itself warm without the help of the external environment. They may use the sun to warm themselves up or water to cool themselves down. All reptiles and amphibians are cold-blooded.