I know what you are going through. We had a Sheltie and at 5 yrs. he started having seizures. His back legs woudn't hold him up but he would manage to get to you for comfort. Vets did everything they could for him. This went on for a year, and then he had to be hospitalized for a least 3 days at a time. The last time he was hospitalized the vet called and said we had to make a decision, kidney failure also set in. The vet said to come up and say our goodbyes and that was the hardest thing for us to do. He was our baby and now he is in Doggie Heaven. Still miss him