I had issues with Gizmo, where he was getting tired of his kibble, so I started feeding him this
Freshpet Vital Dog Food | Review and Rating , he loves the bison beef one. I give him it in the morning and at night, and I leave down a bowl of royal canine yorkie kibble to snack on at all times. He does snack on it, but his main meals are the refrigerated food. I also use treats that are really healthy for training (thank god he is food driven) and I use salmon treats that are high in omegas .