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Scorpions can detach a body part to escape a predator — a process called autotomy.

At a time when body autotomy and rights are threatened daily, thousands of fertility patients have not been safe in their own doctors' offices.

The ability to drop appendages is known as autotomy, or self-amputation.

In most animals and even some sea slugs, autotomy is thought to serve only as a means of avoiding predation.

"We think that very old ones gain little merit from autotomy, as they probably cannot reproduce," Mitoh said.