Thank yo so much for your quick response yesterday. I really appreciated it. We followed the suggestions and gave him a little heating pad. We hooked him up to receive lots of fluids and force fed him with a syringe. Unfortunately he didn't show any signs of improvement after being hooked up to the fluids for 24 hours. The vet felt that he had been hiding his symptoms for a long time and by the time he stopped hiding them it was simply too late. It was just as you said, he had no interest in anything, he just lay there and refused to swallow foods. Our emergency vet was able to talk to an exotics specialist but in the end it seemed the best thing to do would be to let him go. Signing the papers to do that was the hardest decision ever but in the end it was apparently the right decision. He beat the vet to it and passed away on his own about 10 minutes before they were going to put him to sleep.
As hard as it is for me, I am most concerned about her cagemate. They were inseparable and this is her first time being alone in 8 years. I know they are very social animals and I am hoping she will be ok.