Armour (Anatomy)

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Armour in animals is external or superficial protection against attack by predators, formed as part of the body usually through the hardening of body tissues, outgrowths or secretions.

It has therefore mostly developed in 'prey' species.

Armoured structures are usually composed of hardened mineral deposits, chitin, bone or keratin.

Armour is evident on numerous animal species from both current and prehistoric times.