I have 3 Buttons in a 12 x 36 aquarium with soft mesh screen clipped over the top. They seem happy...how would I know different? Clean and fed, dust bath, nest. This weekend they started to escape from the cage at night. At first I couldn't figure out how, but last night after putting them back in bed after they escaped at 1:30, I sat and watched. They are jumping up on the waterer, hooking their feet on the top rim and pushing the netting off. My question is: WHY ON EARTH WOULD THEY WANT OUT? My boxer has repeatedly picked them up and brought them to me, the Chihuahua chases them or they are getting stuck behind the washer or refrigerator. This does not seem like it would be fun....yet they keep it up. ***I have fixed the top (I think!) so they can't get out again.