Why do lizards tails move after they've been cut off?

So the preditor will think it's the actual lizard trying to escape.

Lizards lose their tails to distract would-be predators. Lizards lose their tails to throw off predators. Even after a tail detaches, nervous spasms make a newly dropped lizard tail wag around as if it's alive.

The headless appendage startles predators and gives tailless lizards a few precious moments to escape, relatively unharmed. The trauma jumpstarts cells to build a new tail out of cartilage. Original tails are made of bony vertebrae.

Regeneration can use up a lot of energy, and as lizards get older their tails actually become less colorful, and therefore less attractive to predators. Follow Life's Little Mysteries on Twitter @llmysteries. We're also on Facebook & Google+.

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