He has been gaining weight the last few weeks...well, he was still looking fine. Then this morning my roomate woke me up(he's a night owl) and told me my ferret was wheezing. He didn't look well at all and was staring through me instead of looking at me. I took him to the vet and they said his blood thickness was at 79% instead of the normal 50%. This was as high as he's ever seen; dog, cat, ferret... He took x-rays and saw a mass in the ferret near the hind legs. From the positioning, it could've been one of three things: a bad clog(very unlikely because of the position in the digestive tract), an absess, or a tumor. If it was either of the last two, it would have been a pointless surgery. If it was the first, there was a possibility they could remove it, but the chance of him surviving surgery would have been slim even if they could fix the problem. Exploratory surgery is harsh at best and he was not doing well, so I had to put him down.
Thanks for all the support, guys. Really, this is the third place I contacted. My mom, my friend, and then this forum...you guys are very impotant to me and it is nice to see that people care.