Eggs can be your friend! When I got my pups they came to me very skinny and I’d make them a scrambled egg everyday to mix with their kibbles. :) hope you find something that works for him!
Try mixing a little bit chicken, beef, or turkey baby food into his kibbles. When I worked in a boarding kennel and we couldn’t get the picky dogs to eat, that usually did the trick!
Thanks! I’m a little weary of eggs just because I don’t want him to pick them out and not eat the kibble, but I’ll definitely keep it in mind. My own dogs LOVE the occasional egg treat! I might try the baby food, I don’t think he’ll be able to pick it off like he would canned food.