Frogs are cold-blooded amphibians and appear cool in the infrared because they cannot generate their own body heat. Instead they have temperatures which are close to that of their environment. Notice how dark (cool) this frog appears compared to the warm hand holding it. Frogs are one type of cold-blooded animal that can live in almost any environment on Earth, including Artic regions and high mountain areas. Frogs who live in cold regions cannot be active all year and hibernate when the weather is too cold. When a frog gets too warm, it can cool off by jumping into water.