Cold-blooded

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Cold-blooded is a loose layman's term often used to refer to animals that do not use their metabolism to maintain body temperature. It is typically associated with at least one of three different thermophysiological characteristics:

  • ectothermy, controlling body temperature through external means, such as by basking in the sun;
  • poikilothermy, the ability of an organism to function over a wide internal temperature range;
  • bradymetabolism, the ability to greatly alter metabolic rate in response to need; for example, animals that hibernate;

Cold-blooded could also refer to:

See also

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