I went to go check on our hamster, Jasper, and he wasn't in his cage. The cage was closed. He is no where to be found. We were gone overnight Sat-Sun, I fed him a treat last night, but didn't take him out...the treat is still there, so I'm assuming he wasn't there at all b/c he always eats his treats. SO, sometime btwn when we left on Sat and when we came home on Sun he went missing...and his cage is CLOSED, and it's up on the big 100 gallon aquarium which is too high for the cats to jump on. I haven't seen him. I liked that hamster I have no idea where he is.