Endothermic Versus Ectothermic Some tropical reptiles Homoeothermic Some organisms occurring deep in the Maintain their body ocean or even in deep lakes Most and Mammals mudpuppy temperature within Humans Dogs a narrow range Elephants Poikilothermic Some birds and mammals Most fish, amphibians, and reptiles as Bats well as most invertebrates Can tolerate a wide Humming Birds Frogs variation in internal Squirrels Snakes body temperature, Bear Lizard usually because of environmental variation. Modified From:
Endothermic Versus Ectothermic Homoeothermic Maintain their body temperature within a narrow range Most and Mammals Humans Dogs Elephants Some tropical reptiles Some organisms occurring deep in the ocean or even in deep lakes mudpuppy Poikilothermic Can tolerate a wide variation in internal body temperature, usually because of environmental variation. Some birds and mammals Bats Humming Birds Squirrels Bear Most fish, amphibians, and reptiles as well as most invertebrates Frogs Snakes Lizard Modified From: