What on earth can i feed him. He has reliably eaten all of his 10 years but earlier this year he started being sick - he was on Hill's Science Plan. So i tried Go-cat same effect. Tried Purina - made by same company so same effect. He has been eating Brekkies for the last 2 months and has now started throwing up again.
Any ideas?
P.s. I did take him to the vet and spent money on flea stuff, worming and having 3 teeth removed but no useful tips re diet.