warm-blooded

adj. having blood warmed by the body; having a hot temper

Warm-blooded animals maintain thermal homeostasis; that is, they keep their body temperature at a constant level. This involves the ability to cool down or produce more body heat. Warm-blooded animals mainly control their body temperature by regulating their metabolic rates (e.g. increasing their metabolic rate as the surrounding temperature begins to decrease).
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(a.)
Having warm blood; -- applied especially to those animals, as birds and mammals, which have warm blood, or, more properly, the power of maintaining a nearly uniform temperature whatever the temperature of the surrounding air. See Homoiothermal.
  

Adjective
1. having warm blood (in animals whose body temperature is internally regulated)
(antonym) cold-blooded
(similar) homoiothermic, homeothermic, homothermic
(classification) zoology, zoological science