I have a 19 yr. old male neutered cat. He's losing weight/muscles in hind quarters, but is still rather active. No longer hunts. Sheds large amounts of fur. Still eats good, uses the litter box, etc. Is this just old age?
This could be old age or a disease. It is hard to say without a physical exam. Any geriatric cat should have a physical with a vet 2 x a year. Cats will loose weight and muscle mass as they get older. vetcare