I found a 40 gallon Exo Terra tank for free via Craigslist, and for the past four months I have no idea what the hell to put in it lol. I want a Bearded Dragon or .Blue Tongue Skink, but there's absolutely no way I would feel comfortable about putting either species in there. I've asked this question on Reddit & Facebook - each time I've been told that I could put either leopard geckos or a fire belly toad colony.
There has to be more options of lizards.

I would like to keep this strictly to lizards first, and if you have any other ideas for turtles, frogs/toads, etc. Let me know.