speak for warm blooded. There is an enormous amount of
drivel written on this subject; it attracts drivel.
Many animals are partly
homoiothermic; for example, tuna fish have warm livers and
main swimming muscles while the rest is "cold." Many
animals are homoiothermic sometimes and not others. For
example, hairy moths' flight muscles.
In his book "What Is
Life?" Erwin Schrödinger argues
homoiothermy is a means of pumping positive entropy out of the
animal. This is about the only sensible theory Sporus has