While our cells regenerate, we do not have the capacity to fully regrow body parts, like many animals do. Some of these incredible creatures have super impressive regenerative capabilities.

This story was originally published on May 7, 2021. Animals Scale Tooth Whale Get the best tech, science, and culture news in your inbox daily. News from the future, delivered to your present.

This lesson is about some of the things animals do to keep what goes on inside their bodies perfectly balanced, and few things are more important to keep balanced than body temperature.