Why do some lizards drop their tails when threatened?
Quick Answer
Some lizards use tail autotomy, voluntarily shedding part of the tail to escape predators. The wriggling detached tail distracts the attacker while the lizard gets away.
The Full Story
Tail loss is a defense strategy used by many lizards, including geckos and skinks. Special fracture planes in the tail vertebrae make it possible for the tail to break off cleanly under stress. The detached tail often keeps moving for a while, which can confuse or distract a predator. Regrowing the tail is possible in many species, though the replacement is usually not a perfect copy of the original. This trade-off helps the lizard survive even if it loses energy and stored fat in the process.
Key Facts
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