We have two Northern Fence lizards and an Eastern Glass lizard in a communal 40 g tank.
We had 4 toads, but put them in hibernation this winter in the basement. We plan on releasing them back outside once spring comes.
We may start another anole tank from the ones living around the house. Lat year we got an egg and raised up a hatchling to adult.
Everything else has an exoskeleton.