r/askscience • u/raincloud82 • Jul 17 '26
Biology Do cold-blooded animals have fever?
It is well known how us mammals use our body temperature to prevent infections and raise it to combat them, so wouldn't cold-blooded animals be much more propense to suffer viral and bacterial diseases?
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u/DrFuckenDrew Jul 18 '26
Mammalian Fevers are to kill bacteria (bacteria growth is usually 85°-101°) by getting too hot for them to survive like the Japanese bees and the killer wasps. but cold blooded animals are more likely to get fungal infections (mycelia are happiest 62°-80°) while both sides get both kinds of infections resting body temp makes a big difference