When I was trying to find a small kibble I embarrassed my daughter at Petco. Every bag I picked up I would feel the kibbles from the outside of bag. I was there awhile

The smallest that I found was Royal Canine and Natural Balance for puppies. I don't use those anymore because the graduated to a bigger kibble. I have heard Nat. Balance has that "e" word ethoquin. Not a good thing. Royal Canine is a bit pricey. Good luck kibble shopping