Other Free Encyclopedias » 21st Century Webster's Family Encyclopedia » 21st Century Webster's Family Encyclopedia - Clyde to Constable, John

Cold-blooded animal


Cold-blooded animal, or poikilotherm, animal that cannot maintain a constant internal body temperature and therefore attains a temperature close to that of its environment, making it dangerously subject to climatic changes. Cold-blooded animals include fish, amphibians, and reptiles.

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