I have a little foster pup who's former owner was only feeding him chicken & cheese. As a result he's pretty skinny & has a dry, dull coat. I've got him on a good quality food, and he's already gaining weight
. I want to give him a fish oil supplement, and am wondering if it's ok to also give him the coconut oil I've been giving my other pups? Is it ok to give both, or should I choose one or the other? It just one, which is better, fish or coconut?