I have an est. 1 1/2 year old male who was perfectly fine yesterday, but now he has labored breathing (his whole head bobs up and down when he breathes and is very noisy), He is hunched over, he is having major trouble walking (falls over a lot, he is walking like he is dizzy), major hair loss (his back and legs have almost no hair on them), and he is suddenly very docile (this rat is usually very rambunctious and hyper.) He has lost weight very quickly, (he was a fat rat, and now he is so thin I can feel his bones,) I also found a piece of poop on his butt earlier, and he smells horrible. We don't have any money to take him to a vet, so how can I make him more comfortable if these are his final days? Is there anything I could do for cheap? Thank you.