What is molting? Compare what is called moulting in mammals, arthropods?

Molting is the process of changing the cover of animals, which has a varied character.
in arthropods, this process of formation at a certain time under the old crayfish shell of a new thin chitinous cover and the old one discards. this is molt.
In mammals, molt occurs twice a year, in the spring when the winter coat is shed, and in the fall when the warm winter cover grows.



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