Editing Warm-blooded (section)

==Terminology==
In general, warm-bloodedness refers to three separate categories of [[thermoregulation]].
*[[Endotherm|'''Endothermy''']]{{efn|[[Ancient Greek|Greek]]: ἔνδον ''endon'' "within" θέρμη ''thermē'' "heat"}} is the ability of some creatures to control their body temperatures through internal means such as muscle shivering or increasing their [[metabolism]]. The opposite of endothermy is [[ectothermy]]. 
*[[Homeotherm|'''Homeothermy''']]{{efn|Greek: ὅμοιος ''homoios'' "similar", θέρμη ''thermē'' "heat"}} maintains a stable internal body temperature regardless of external influence and temperatures. The stable internal temperature is often higher than the immediate environment. The opposite is [[poikilothermy]]. The only known living homeotherms are [[mammal]]s and [[bird]]s, as well as one lizard, the [[Argentine black and white tegu]]. Some extinct reptiles such as [[ichthyosaur]]s, [[pterosaur]]s, [[plesiosaur]]s and some non-avian [[dinosaur]]s are believed to have been homeotherms.
*'''Tachymetabolism{{efn|Greek: ταχύς ''tachys'' or ''tachus'' "fast, swift", {{lang|grc|μεταβάλλειν}} ''metaballein'' "turn quickly"}}''' maintains a high "resting" metabolism. In essence, tachymetabolic creatures are "on" all the time. Though their resting metabolism is still many times slower than their active metabolism, the difference is often not as large as that seen in [[bradymetabolic]] creatures. Tachymetabolic creatures have greater difficulty dealing with a scarcity of food.{{citation needed|date=February 2023}}