We have a 7 year old Rat Terrier named Jack. He's a very good natured dog, tail always wagging, a little goofy, but he loved people and would cuddle you at the drop of a hat, etc. Lately we noticed he hasn't been very hungry, so we brought him to the vet. Turns out that he is in the beginning stages of Renal failure. Jack spent overnight at the Vet's and was given some nutrients through an IV. This morning the vet told us that prognosis was guarded, that the renal failure was caused by Lyme Disease. I hope he pulls through. As much as a pain that he is, he is a very lovable dog and is always doing something to make us smile.
We should find out more today. The Doctor hasn't gone into details about treatment yet.