How many times can lizards regrow their tails ??

 All of us must have seen a lizard without tail.

When threatened by a predator, a lizard can shed their tail. 

This is called autotomy.

The tail detaches along specialized fractures within the vertebrae.

This is a defense mechanism that serves as a distraction, allowing the lizard to escape.

Once the tail is lost, process of regeneration begins.

Lizards ' limitations of regeneration of tail 

While lizards can regrow their tails, this is not limitless.

If the regenerated tail is lost again, it can not regrow in the same manner.

The original tail consists of bones, but regrown tail consists only of cartilage.

Though the nerve regrow, their arrangement and functionality may differ from original.

A lizard can potentially shed its tail multiple times throughout its life, but quality and functionality of each regenerated tail decrease over time.

Once the lizard has regenerated tail, subsequent detachment does not trigger another regeneration cycle with same complexity.