I have a lizard like that actually three and they just hatched two days ago and they have blue tails too I hatched them myself but anyway their called blue tailed lizards.
A Very Tiny Lizard With A Blue Tail, What Kind Is This?
It's a skink...probably a young one. They are usually black with white or yellow stripes and a bright blue tail that comes off when attacked. Usually they change color when they age.
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