[Anonymous]

I would be inclined to listen to your vet, maybe ask him to explain his rationale.
Canned food tends to be greasy, I use it occasionally as a topper. But, not so much anymore, as my dog with a sensitive stomach tends to vomit after eating it. Plus it spoils quickly.
I soak the kibble in water overnight in the fridg for my senior, it then has the consistency of wet food. That seems to agree with him the best.