Sick animals often move to warmer places to raise their body temperature. GK Hart/Vikki Hart/Stone via Getty Images May 23, 2025 From furry friends to fish, turning up the heat helps animals fight germs − how Mother Nature’s cure offers humans a lesson on fever Phil Starks, Tufts University and Harry Bernheim, Tufts University Fever isn’t necessarily a bad thing − it’s actually a useful response to infections.
