> Lizards shed their tails to distract predators, they drop the tail
> which twitches and thrashes, distracting the predator 
That would distract me if one of my geckos dropped a twitching tail!

It seems to me I read somewhere that gex have a fracture plane in one of the tail 
vertebrae that allows them to drop their tails.  Am I remembering that correctly?  Can 
they do it spontaneously or does it require some sort of physical stimulous, or does 
it vary by species?  
Do you use the word autotomy with this?

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