KailahK
Yes, my sugar glider recently lost his female cage mate and had the same symptoms. I'm working to make him feel better until his new cage mate will be ready by letting him out more often, adding more variety to his diet, and pimping his cage up with lots of brain stimulating activities! Such as ball/fleece pits, straws in a ball, moneys in a barrel, baby clasps hanging from one cage to the other, a brand new igloo he get's to eat his dinner in, a NEW cage, and beaded ladders, among other things. I'd just recommend giving your glider 2x the love until he gets his new buddy.