Ingredient file // Ingredient
Fructooligosaccharides
Short chains of fruit sugars that resist digestion, used as a prebiotic.
Our read // In our catalog
In 1 of every 12 foods we track
Share of foods that list it
8%
191 of the 2,250 foods we track, from 10 brands. 189 dry dog food, 2 wet dog food.
Each square is 1% of the catalog
Where it sits on the label
Median position 18. In the top five of 0 foods, so it is usually a minor ingredient.
Above the salt
Usually listed after the salt, which caps it at roughly 1% of the recipe in 66% of foods.
Price per lb
Median of the cheapest bag price across 150 priced foods, 13% above the catalog. The price is the food's, not the ingredient's.
Who leans on it
53%
of the foods that list it are from Royal Canin. 10 brands use it in total.
What it is
Why it turns up in dog food
- Pass through to the large intestine where they feed beneficial bacteria, which supports gut balance.
Who uses it
Brands, best sellers and the company it keeps
Top brands, by foods that list it
Amazon best sellers that list it
- #9 Iams Proactive Health MiniChunks Chicken & Whole Grains Dry Dog Food
- #15 Hill’s Science Diet Adult 1-6 Small Bites Chicken & Barley Recipe Dry Dog Food
- #23 Hill’s Science Diet Adult 1-6 Chicken & Barley Recipe Dry Dog Food
- #26 Royal Canin Small Adult Dry Dog Food
- #35 Iams Adult Large Breed Dry Dog Food
- #42 Hill’s Science Diet Adult Large Breed Chicken & Barley Recipe Dry Dog Food
- #57 Iams Adult Minichunks with Lamb & Rice Dry Dog Food
- #70 Iams Adult Small Breed Dry Dog Food
Rank on Amazon's dog food best seller list, checked October 2026.
Usually listed with, share of the foods that list it
- Chicken Fat 84%
- Natural Flavor 72%
- Chicken By-Product Meal 65%
- Brewers Rice 64%
- Dried Plain Beet Pulp 53%
- Corn 51%
- Wheat Gluten 42%
- Chicken 28%
- Brown Rice 27%
- Wheat 27%
- Corn Gluten Meal 27%
- Fish Oil 26%