Poikilotherm

+A poikilotherm is an organism whose internal [Body Temperature](/wiki/body_temperature) fluctuates with the environment. Unlike a [Homeotherm](/wiki/homeotherm), it relies on external sources to regulate its warmth.

+## See also

+- [Ectotherm](/wiki/ectotherm)

+- [Endotherm](/wiki/endotherm)

+- [Metabolism](/wiki/metabolism)