What treats are best for puppies or sensitive stomachs?

Single-ingredient or limited-ingredient freeze-dried treats are the most-recommended for sensitive dogs because there are fewer fillers to trigger issues, with Pupford and Vital Essentials beef liver both praised in r/puppy101. Soft, breakable treats are favored for young puppies, though reviewers note to check piece size and smell, as some flavors are reported to be strong.