Glossary

 Cat Claw Close-up
Claw of a Cat

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Keratin
A protein that is deposited to form hard, tough and water-resistant epidermal (skin) tissues.
Keratin forms the outer layer of epidermis, hair, nails , claws , hoofs , horns and feathers.
Tissues containing keratin are keratinous.
Keratinisation is the process of becoming keratinous.