"Sam" was 8 years old, and he had become quite a grouchy, old cat. He was still gentle and wanted petting, feeding and watering, but he acted like he had a tooth ache and he had bad breath. The vet said there was no known cure for the virus infection, Feline Leukemia and that it was VERY infectious to other animals. Her said that he probably got it in a fight with another infected cat, or that it could be caught by drinking or eating from the same water bowl or feed bowl that another infected animal used. I...