Warm-blooded
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Warm-blooded is a term referring to animal species whose bodies maintain a temperature higher than that of their environment. In particular, homeothermic species maintain a stable body temperature by
Thermographic image: a cold-blooded snake is shown eating a warm-blooded mouse
Wiki ostrich
Thermoregulation
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Thermoregulation is the ability of an organism to keep its body temperature within certain boundaries, even when the surrounding temperature is very different. A thermoconforming organism, by contrast
Warm-blooded
…species (including birds and mammals) maintain a stable body temperature by regulating metabolic processes. Other species have various degrees of thermoregulation. Because there are more than two categories of temperature control utilized by animals, the terms warm-blooded and cold-blooded have been deprecated…
Seeking shade is one method of cooling. Here sooty tern chicks are using a black-footed albatross chick for shade.
Thermographic image of a snake around an arm
Kangaroo licking its arms to cool down
During cold weather, many animals increase their thermal inertia by huddling.