He's homeothermic; his females give live birth and nurse their young.    From Wordnik.com.  [Ensign Flandry]

Theirs was a high homeothermic metabolism, with corresponding energy demands.    From Wordnik.com.  [A Circus of Hells]

At about the same time, they become homeostatic and homeothermic, as mammals are.    From Wordnik.com.  [A Case Of Conscience]

A large one, homeothermic, to judge from the infrared, holding still a short ways off.    From Wordnik.com.  [The Queen of Air and Darkness]

Reptiles are poikilothermic, which means that they can not regulate heat internally (as opposed to birds and mammals which are homeothermic).    From Wordnik.com.  [Reptile] Reference

Moreover, they are truly homeothermic, requiring maintenance of a constant internal body temperature that is considerably above environmental temperature.    From Wordnik.com.  [Climate change and reindeer nomadism in Finnmark, Norway] Reference

While hibernation during the winter is found in a few arctic mammals such as the Arctic ground squirrel (Spermophilus parryii), most homeothermic animals are active throughout the year.    From Wordnik.com.  [General characteristics of arctic species and their adaptations in the context of changes in climate and ultraviolet-B radiation levels] Reference

One then makes an empirical calibration of running speed with temperature using some human runners, and goes on to construct a global temperature proxy by timing groups of wild-type human runners without knowing their nutritional status, their health profile, their homeothermic capacity or ability to sweat, their susceptibility to heat stroke, or the twitch rate of their muscles.    From Wordnik.com.  [Treydte, Moberg, Soon and Baliunas « Climate Audit] Reference