"Just in case anybody doesn't know, warm-blooded and cold-blooded are now defunct terms in biology. This is because "cold-blooded" animals can actually have very hot blood e.g. lizards in the desert, and "warm-blooded" animals can actually have relatively cold blood e.g. bats during torpor. The terms I am aware of are homeotherm (maintains a steady body temperature e.g. humans) and poikilotherms (body temperature fluctuates with ambient temperature). It seems endotherm and ectotherm are two other terms that can be used, those being animals that generate their own internal heat and those that don't respectively. As far as I can tell endotherm, homeotherm and warm-blooded are synonymous, as are ectotherm, poikilotherm and cold-blooded. There may be subtleties that I am not aware of that distinguish endotherm from homeotherm etc."
15 May 2015
The term "warm-blooded" is passe
Same with "cold-blooded," as per a comment quibbling with the title of a report on the discovery of the first warm-blooded fish: