Our 12 year old cat has been losing weight dramatically and is skin and bone. Previously a perky adventurer, he's barely got the energy to drag himself around the house. Vet did tests a couple of weeks ago and results are not conclusive, but it seems as though cat isn't absorbing vitamins etc, even through he is (barely) eating. More tests this week for lymphoma and poss ultrasound. However I'm not convinced- doesn't display symptoms described on Vet Google (vomiting, diarrhoea). No apparent distress, just wasting away sadly.
Anyone had this experience or any ideas of what could be wrong?