Emperor penguin juvenile in moulting stage


Moulting is all about renewing your skin, fur or feathers, and occurs in animals for a number of reasons. Some creatures, such as snakes and insects, need to shed their skins in order to grow. Birds moult their feathers at least annually to replace damaged ones, and some species also take the opportunity to change into breeding colours or to turn white in winter for camouflage. Mammals may shed their fur for a thicker winter or thinner summer coat, and again some types may change fur colour with the seasons.

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Animals with this behaviour






Crabs, shrimp and krill



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