Autotomy
Self-amputation / From Wikipedia, the free encyclopedia
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Not to be confused with Autonomy.
Autotomy (from the Greek auto-, "self-" and tome, "severing", αὐτοτομία) or 'self-amputation', is the behaviour whereby an animal sheds or discards one or more of its own appendages,[1] usually as a self-defense mechanism to elude a predator's grasp or to distract the predator and thereby allow escape. Some animals have the ability to regenerate the lost body part later. Autotomy has multiple evolutionary origins and is thought to have evolved at least nine times independently in animals.[2] The term was coined in 1883 by Leon Fredericq.[3]