I'm worried about my 13ish yr old rescue cat-he's had bad diarrhea which is hopefully now sorted (saw vet, full blood tests with nothing alarming going on) He's had an injection to stop the flow as it were but he's down to 3 kilos! He used to weigh over 4! He's always super hungry and only eats wet food as his teeth aren't great and will need sorting as soon as he is better...
I stupidly didn't think to ask the vet how to help him regain his weight... Any ideas? DH suggested kitten food-would that be more calorific or is it a bad idea? Any advice would be appreciated-it's horrible seeing him looking so thin and sad 