Claw | Structure, Function, Adaptation, & Facts | Britannica
https://www.britannica.com/science/claw
WebMar 15, 2024 · claw, narrow, arched structure that curves downward from the end of a digit in birds, reptiles, many mammals, and some amphibians. It is a hardened ( keratinized) modification of the epidermis. Claws may be adapted for scratching, clutching, digging, or climbing. By analogy, the appendages of other lower animals are frequently called claws.
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