i really like exo terras and so does my fiance, he had said that i can have a wall of exo terras with any 'vermin' (as he calls them) i want in. they look really nice as well, at the mo i have a trio of african pygmy dormice in a 60x45x45 exo terra and i have an 90x45x45 exo terra on the way for my 6 zebra (striped grass) mice. so i want to get some more exo terras for the fancy mice as well, i was thinking of a 90x45x45 for the girls, a 30x30x30 for each of the boys and maybe a 45x45x45 for mums to birth in, but ill have to have another look at them and decide