homeotherm
/ˈhoʊmiəˌθɜrm/
noun
- An animal that keeps its body temperature at a fairly constant level, usually warmer than its surroundings; a warm-blooded animal.
- Unlike a homeotherm, a lizard must bask in the sun to warm up.
- Mammals and birds are homeotherms, so they can stay active in cold weather.
- A homeotherm like a polar bear has thick fur to help maintain its body heat.
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