I use
Nutro's Natural Choice:
Lamb and rice treats. I used to give Pupperoni to Chico, but when I began researching Yorkies (mostly on YT) I ran across articles on harmful ingredients in dog food and threw it away. I stopped feeding Chico Eukanuba Dog food (the food that I thought was the best that money could buy) afterwards and switched him over to
Innova dog food. Benji eats
Innova puppy but he sneaks Chico's larger kibble when I'm not looking. Now I look at labels before I buy food or treats for my babies. I don't buy anything with meat-by-products, corn, corn syrup, etc.
Wellness has some good treats too that you can buy at Petsupermarket but you would have to cut it up yourself.
Nutro's treats can easily be broken into smaller pieces with your hands like Pupperoni which is why I decided to use it for potty training. I also like
Milk-Bone:
Original bone marrow training treats, and
Pedigree's:
Breath Buster treats as once-a-day treats for when they are behaving. Good luck finding something that works for your furbaby. Hope this helps.