My dog has been very sick for several weeks now. She is a 3 year old teacup Chihuahua. At first I noticed a decrease in apetite. She has always had bad teeth and I have to brush them all the time, shes even lost a few over the years. I thought maybe her teeth were too sore to eat, so I tried her on wet food instead of dry. No luck...and even table food like chicken, not much luck there either. Then the diarrhea started, and then she had blood in it as well. There is a very foul stench coming from the towels I keep in her kennel. Off to the vet we went, they tested for parvo, and gave her some fluids...as well as an antibiotic to take home. But I couldn't afford the blood work, so we went home and gave that a try. She was eating some boiled chicken and her stool started to firm up a bit, and the blood was starting to disappear...but then she stopped eating again. I took her back to the vet, but a different one this time because I feel the first over charged way too much. They gave her some more fluids and did another fecal test, no blood, and she ate a little chicken for the nurse, so they sent me home. Over the past week or so I've been giving her nutri-cal gel and trying to get her to drink and eat as much as possible. Tonight I tried brushing her teeth again, only to discover the tip of her tongue is GONE...its rotting, and it looks terrible. I have NO IDEA what could have caused this or what to do. The vet is open at 8am and I will be taking her in, but I wanted to see if anyone had any advice to give before that time. Thanks.
Rotting tongue, please help 
