an animal capable of maintaining its body temperature above the temperature of the external environment.

able to regulate own body temperature without external sources (only birds and mammals among extant creatures), eg. mouse.

EN-doe-THERM Animal that uses metabolic heat to regulate its temperature. 771

a warm-blooded animal, like a bird and mammal, capable of regulating its internal temperature.

An animal that uses metabolic energy to maintain a constant body temperature, such as a bird or mammal.

An animal that maintains its body temperature at a relatively constant level by physiological means regardless of the temperature of the environment (also called warm-blooded) .

An organism which is able to generate heat within itself to raise its body temperature significantly.

Warm-blooded; internal regulation.