Questions about Emerald Tree Skinks
 

1.) how far off the ground do they need to be to feel comfortable. What I mean is, if I had an enclosure two feet off the ground would the lizards feel less secure and be more skittish? I have a 3 level system, and I want to put them on the bottom level - but I don't want them being stressed

2.) how many Emerald Tree Skinks can live comfortably in a 4x2x2?

I think that 2 feet is enough height but i wouldnt put more than 4 or 5 in a 4x2x2, dont want to overcrowd them.