I rescued my cat 9 years ago as a stray and he has lived a very good life. He has always been the alpha cat and got quite large. I think at his most he weighed in at around 20 lbs. Very recently, within the past 3 months or so he has begun drinking a lot of water and peeing a lot in his litter box and has dropped a lot of weight. When petting him I can feel his bones. After doing research online I came to the conclusion that he probably has diabetes. I don't have the initial $300 to put down to take him to the vet as I recently became a single mother and have been needing help from family just to be able to afford child care while I am at work. It pains me to see my cat so thin and I worry about him getting even sicker but I just don't have the extra money available to care for him. Plus, I have two other cats who all eat out of the same food dish and use the same litter box. Since he is older than the other two I worry that he will not take to the additional treatment, separating him from the other litter box and food. I need help as I don't know where to begin. Under normal circumstances I would just take him to the vet and do whatever they recommended, but as I don't have the possibility to do so I am lost. Any help or advice would be great. I just want to do what's best for my cat and give him the best chance possible.