warm-blooded

adjective2

1. •
   Maintaining a relatively constant and warm body temperature, regardless of the ambient temperature; endothermic.

   • We stood there, shivering, colder even than when we had been on our horses, for horses are warmer-blooded than their riders, and one always gains heat from them. — 2016
2. •
   Passionate.

   • Claire jumped from her chair and smiled the warmest-blooded smile that she could muster. — 2003