Our "frog room" aka the dining room is pretty much in constant evolution and I was thinking of using 12x12x12 exo terra's for our horned frogs because of the front opening(easy maintenance). Then my voice of reason(my girlfriend) pointed out that add a big pacman+a water dish big enough for it and theres just no room for it. After we got our 5" female and put it in a 10, it almost seems cramped for her.