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Adjective: warm-blooded  'worm 'blú-did
  1. (zoology) having warm blood (in animals whose body temperature is internally regulated)
    "Many so-called 'cold-blooded' creatures, such as lizards, are really warm-blooded"

See also: homeothermic, homoiothermic, homothermic

Antonym: cold-blooded

Encyclopedia: Warm-blooded