NONE.
Never keep different species of reptiles in the same enclosure. The reasons are many, and range from the transmission of disease or parasites, to competition over food and basking, to fighting.
Reptiles are NOT happy with companions, and you should provide them what they need to thrive in captivity--which means, their own separate enclosure.
skinks have blue tails
Some skinks have a blue tongue
Depends, some skinks has blue tounges but others dont.
Yes blue tongue skinks are born live,not from eggs
Skinks
Yes, all skinks are a type of lizard.
Most likely because of the loss of habitat. Us humans have destroyed a lot of land for houses and buildings. Brandon
yes, but loses it's markings.
No, they are not poisonous.
they hidernate
When talking about common five lined skinks; yes.
No, blue-tailed skinks are not endangered, but blue-tailed mole skinks are. These are a limited area variety, and are not the common blue-tailed skink that seem to be everywhere here around my house in Missouri.