I have had 2 fish at diff times make ther way out of the tank in the middle of the night and my dog barked and growled at the bedroom door i had no idea why so i got up just incase and when i get to the kitchen he just stops and looks at the floor i try not to turn the light on at night caus my tsn freeks out bad so when i do so when i move him and look my gar has goten out and another time it was my pacu i also have a sulcata tort and I have lined the cage with plexie glass and he still manages to flip over every time he flips over my dog just sits in front of his cage and crys dont know what i would do with out him.