Autotomy, or self amputation, is when an animal sheds or discards one or more of its own appendages, usually as a self-defense mechanism to elude a predator's grasp or to distract the predator and thereby allow escape. Species that do this include some geckos and lizards (tails), salamanders (tails), some spiders (legs) and bees (stinger).

Autotomy, or self amputation, is when an animal sheds or discards one or more of its own appendages, usually as a self-defense mechanism to elude a predator's grasp or to distract the predator and thereby allow escape. Species that do this include some geckos and lizards (tails), salamanders (tails), some spiders (legs) and bees (stinger).