What Happens When a Gecko Loses Its Tail?

You’re about to witness one of the most surprising survival tricks in the animal kingdom—and it starts with a dropped tail.

Meet Knox, a leopard gecko who can shed his tail when threatened. But it doesn’t stop there. The tail keeps wiggling on the ground for up to 30 minutes, buying Knox just enough time to escape. This self-defense strategy, known as autonomy, is both bizarre and brilliant. Even more impressive? He can grow a new tail and use the tactic again and again.