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Ingredient file

Fructooligosaccharides

Short chains of fruit sugars that resist digestion, used as a prebiotic.

Our read // In our catalog

In 1 of every 14 foods we track

Share of foods that list it

7%

232 of the 3,205 foods with an ingredient list on file, from 20 brands. 214 dry dog food, 13 wet dog food, 5 dog food topper.

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.

Top five List position, heaviest first

Above the salt

32%

Usually listed after the salt, which caps it at roughly 1% of the recipe in 68% of foods.

Price per lb

Foods with it $3.67
All foods $3.25

Median of the cheapest bag price across 169 priced foods, 13% above the catalog. The price is the food's, not the ingredient's.

Who leans on it

46%

of the foods that list it are from Royal Canin. 20 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

  1. Royal Canin 106 / 161
  2. Eukanuba 24 / 35
  3. Horizon 24 / 27
  4. Iams 19 / 32
  5. Hill's 15 / 117
  6. Rayne Nutrition 10 / 14
  7. Bil-Jac 7 / 32
  8. Blue 5 / 186
  9. K9 Natural 3 / 8
  10. Solid Gold 3 / 46

Foods that list it / all the brand's recipes we track.

Plus 10 more brands.

Amazon best sellers that list it

  1. #10 Iams Proactive Health MiniChunks Chicken & Whole Grains Dry Dog Food
  2. #13 Hill’s Science Diet Adult 1-6 Small Bites Chicken & Barley Recipe Dry Dog Food
  3. #21 Hill’s Science Diet Adult 1-6 Chicken & Barley Recipe Dry Dog Food
  4. #29 Royal Canin Small Adult Dry Dog Food
  5. #40 Hill’s Science Diet Adult Large Breed Chicken & Barley Recipe Dry Dog Food
  6. #42 Iams Adult Large Breed Dry Dog Food
  7. #50 Iams Adult Minichunks with Lamb & Rice Dry Dog Food
  8. #75 Royal Canin Small Puppy 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

  1. Chicken Fat 74%
  2. Natural Flavor 64%
  3. Chicken By-Product Meal 56%
  4. Brewers Rice 55%
  5. Dried Plain Beet Pulp 48%
  6. Corn 44%
  7. Wheat Gluten 37%
  8. Chicken 31%
  9. Mixed Tocopherols 25%
  10. Wheat 23%
  11. Brown Rice 23%
  12. Corn Gluten Meal 22%

On the shelf

Foods that list Fructooligosaccharides

232 foods in our catalog list it. These 60 list it highest on the label.

Solid Gold Nutrientboost Chicken Freeze Dried Dog Food TopperSolid GoldSolid Gold Nutrientboost Chicken Freeze Dried Dog Food TopperTopper // No. 7 on the labelBil-Jac Sensitive Solutions Skin & Stomach Support Chicken & Sweet Potato Recipe in Gravy - Bil-Jac Wet Dog FoodBil-JacBil-Jac Sensitive Solutions Skin & Stomach Support Chicken & Sweet Potato Recipe in Gravy - Bil-Jac Wet Dog FoodWet // No. 9 on the labelIams Advanced Health Healthy Digestion Dry Dog FoodIamsIams Advanced Health Healthy Digestion Dry Dog FoodDry // No. 9 on the labelRayne Nutrition Growth/Sensitive-GI Chunky Stew Wet Dog FoodRayne NutritionRayne Nutrition Growth/Sensitive-GI Chunky Stew Wet Dog FoodWet // No. 10 on the labelRoyal Canin Veterinary Selected Protein KO Dry Dog FoodRoyal CaninRoyal Canin Veterinary Selected Protein KO Dry Dog FoodDry // No. 10 on the labelSolid Gold Homestyle Meals Wet Dog FoodSolid GoldSolid Gold Homestyle Meals Wet Dog FoodWet // No. 11 on the labelSimply Nourish Gut Health Recipe Adult Wet Dog FoodSimply NourishSimply Nourish Gut Health Recipe Adult Wet Dog FoodWet // No. 11 on the labelRoyal Canin Veterinary Selected Protein PW Grain-Free Dry Dog FoodRoyal CaninRoyal Canin Veterinary Selected Protein PW Grain-Free Dry Dog FoodDry // No. 11 on the labelBil-Jac Sensitive Solutions Digestive & Immune Support Turkey & Pumpkin Recipe in Gravy - Bil-Jac Wet Dog FoodBil-JacBil-Jac Sensitive Solutions Digestive & Immune Support Turkey & Pumpkin Recipe in Gravy - Bil-Jac Wet Dog FoodWet // No. 12 on the labelRayne Nutrition Adult RSS Wet Dog FoodRayne NutritionRayne Nutrition Adult RSS Wet Dog FoodWet // No. 12 on the labelEukanuba Breed Specific Adult German Shepherd Dry Dog FoodEukanubaEukanuba Breed Specific Adult German Shepherd Dry Dog FoodDry // No. 12 on the labelRoyal Canin Yorkshire Terrier Puppy Dry Dog FoodRoyal CaninRoyal Canin Yorkshire Terrier Puppy Dry Dog FoodDry // No. 13 on the label
Show 48 more
Royal Canin Veterinary Hydrolyzed Protein HP Dry Dog FoodRoyal CaninRoyal Canin Veterinary Hydrolyzed Protein HP Dry Dog FoodDry // No. 11 on the labelRayne Nutrition Crocodilia Maint Crocodilia-Maint Dry Dog FoodRayne NutritionRayne Nutrition Crocodilia Maint Crocodilia-Maint Dry Dog FoodDry // No. 12 on the labelRayne Nutrition Low Fat Kangaroo Maint Quinoa Low Fat Kangaroo-Maint with Quinoa Dry Dog FoodRayne NutritionRayne Nutrition Low Fat Kangaroo Maint Quinoa Low Fat Kangaroo-Maint with Quinoa Dry Dog FoodDry // No. 12 on the labelRoyal Canin Veterinary Ultamino Dry Dog FoodRoyal CaninRoyal Canin Veterinary Ultamino Dry Dog FoodDry // No. 12 on the labelRoyal Canin Veterinary Multifunction Renal Support + Hydrolyzed Protein Dry Dog FoodRoyal CaninRoyal Canin Veterinary Multifunction Renal Support + Hydrolyzed Protein Dry Dog FoodDry // No. 12 on the labelRoyal Canin Veterinary Hydrolyzed Protein Small Dog Dry Dog FoodRoyal CaninRoyal Canin Veterinary Hydrolyzed Protein Small Dog Dry Dog FoodDry // No. 12 on the labelRayne Nutrition Rabbit Maint Rabbit-Maint Dry Dog FoodRayne NutritionRayne Nutrition Rabbit Maint Rabbit-Maint Dry Dog FoodDry // No. 13 on the labelRayne Nutrition Rabbit Maint Quinoa Rabbit-Maint with Quinoa Dry Dog FoodRayne NutritionRayne Nutrition Rabbit Maint Quinoa Rabbit-Maint with Quinoa Dry Dog FoodDry // No. 13 on the labelRoyal Canin Veterinary Urinary UC Dry Dog FoodRoyal CaninRoyal Canin Veterinary Urinary UC Dry Dog FoodDry // No. 13 on the labelRoyal Canin Veterinary Glycobalance Dry Dog FoodRoyal CaninRoyal Canin Veterinary Glycobalance Dry Dog FoodDry // No. 13 on the labelEukanuba Adult Medium Breed Dry Dog FoodEukanubaEukanuba Adult Medium Breed Dry Dog FoodDry // No. 13 on the labelEukanuba Adult Small Bites Dry Dog FoodEukanubaEukanuba Adult Small Bites Dry Dog FoodDry // No. 13 on the labelRayne Nutrition Growth Sensitive GI Growth/Sensitive-GI Grain-Free Dry Dog FoodRayne NutritionRayne Nutrition Growth Sensitive GI Growth/Sensitive-GI Grain-Free Dry Dog FoodDry // No. 14 on the labelRoyal Canin Veterinary Hydrolyzed Protein Moderate Calorie Dry Dog FoodRoyal CaninRoyal Canin Veterinary Hydrolyzed Protein Moderate Calorie Dry Dog FoodDry // No. 14 on the labelRoyal Canin Veterinary Urinary SO + Hydrolyzed Protein Dry Dog FoodRoyal CaninRoyal Canin Veterinary Urinary SO + Hydrolyzed Protein Dry Dog FoodDry // No. 14 on the labelRoyal Canin Veterinary Satiety + Hydrolyzed Protein Dry Dog FoodRoyal CaninRoyal Canin Veterinary Satiety + Hydrolyzed Protein Dry Dog FoodDry // No. 14 on the labelRoyal Canin Small Adult 8+ Dry Dog FoodRoyal CaninRoyal Canin Small Adult 8+ Dry Dog FoodDry // No. 14 on the labelRoyal Canin Shih Tzu Puppy Dry Dog FoodRoyal CaninRoyal Canin Shih Tzu Puppy Dry Dog FoodDry // No. 14 on the labelIams Adult Minichunks Dry Dog FoodIamsIams Adult Minichunks Dry Dog FoodDry // No. 14 on the labelHorizon Pulsar Grain-Free Salmon Formula Dry Dog FoodHorizonHorizon Pulsar Grain-Free Salmon Formula Dry Dog FoodDry // No. 14 on the labelEukanuba Adult Large Breed Lamb Dry Dog FoodEukanubaEukanuba Adult Large Breed Lamb Dry Dog FoodDry // No. 14 on the labelEukanuba Senior Dry Dog FoodEukanubaEukanuba Senior Dry Dog FoodDry // No. 14 on the labelEukanuba Adult Dry Dog FoodEukanubaEukanuba Adult Dry Dog FoodDry // No. 14 on the labelIams Proactive Health MiniChunks Chicken & Whole Grains Dry Dog FoodIamsIams Proactive Health MiniChunks Chicken & Whole Grains Dry Dog FoodDry // No. 15 on the labelRoyal Canin French Bulldog Adult Dry Dog FoodRoyal CaninRoyal Canin French Bulldog Adult Dry Dog FoodDry // No. 15 on the labelI and Love and You Top That Wit Lamb Recipe in Gravy Dog Food TopperI and Love and YouI and Love and You Top That Wit Lamb Recipe in Gravy Dog Food TopperTopper // No. 15 on the labelRoyal Canin Veterinary Dental Dry Dog FoodRoyal CaninRoyal Canin Veterinary Dental Dry Dog FoodDry // No. 15 on the labelRoyal Canin Veterinary Vegetarian Dry Dog FoodRoyal CaninRoyal Canin Veterinary Vegetarian Dry Dog FoodDry // No. 15 on the labelRoyal Canin Small Digestive Care Dry Dog FoodRoyal CaninRoyal Canin Small Digestive Care Dry Dog FoodDry // No. 15 on the labelRoyal Canin Chihuahua Adult Dry Dog FoodRoyal CaninRoyal Canin Chihuahua Adult Dry Dog FoodDry // No. 15 on the labelRoyal Canin Dachshund Puppy Dry Dog FoodRoyal CaninRoyal Canin Dachshund Puppy Dry Dog FoodDry // No. 15 on the labelRoyal Canin Medium Adult 7+ Dry Dog FoodRoyal CaninRoyal Canin Medium Adult 7+ Dry Dog FoodDry // No. 15 on the labelI and Love and You Top That Shine Beef Recipe in Gravy Dog Food TopperI and Love and YouI and Love and You Top That Shine Beef Recipe in Gravy Dog Food TopperTopper // No. 15 on the labelEukanuba Senior Medium Breed Dry Dog FoodEukanubaEukanuba Senior Medium Breed Dry Dog FoodDry // No. 15 on the labelEukanuba Fit Body Medium Breed Weight Control Dry Dog FoodEukanubaEukanuba Fit Body Medium Breed Weight Control Dry Dog FoodDry // No. 15 on the labelEukanuba Puppy Medium Breed Dry Dog FoodEukanubaEukanuba Puppy Medium Breed Dry Dog FoodDry // No. 15 on the labelEukanuba Fit Body Small Breed Weight Control Dry Dog FoodEukanubaEukanuba Fit Body Small Breed Weight Control Dry Dog FoodDry // No. 15 on the labelEukanuba Puppy Small Breed Dry Dog FoodEukanubaEukanuba Puppy Small Breed Dry Dog FoodDry // No. 15 on the labelEukanuba Fit Body Large Breed Weight Control Dry Dog FoodEukanubaEukanuba Fit Body Large Breed Weight Control Dry Dog FoodDry // No. 15 on the labelRoyal Canin Small Adult Dry Dog FoodRoyal CaninRoyal Canin Small Adult Dry Dog FoodDry // No. 16 on the labelRoyal Canin Yorkshire Terrier Adult Dry Dog FoodRoyal CaninRoyal Canin Yorkshire Terrier Adult Dry Dog FoodDry // No. 16 on the labelRayne Nutrition Low Fat Kangaroo-MAINT with Ancient Grains Dry Dog FoodRayne NutritionRayne Nutrition Low Fat Kangaroo-MAINT with Ancient Grains Dry Dog FoodDry // No. 16 on the labelSolid Gold Hund-N-Flocken Lamb Wet Dog FoodSolid GoldSolid Gold Hund-N-Flocken Lamb Wet Dog FoodWet // No. 16 on the labelRayne Nutrition Plant Based Plant-Based Dry Dog FoodRayne NutritionRayne Nutrition Plant Based Plant-Based Dry Dog FoodDry // No. 16 on the labelFarmina Pet Foods - - Farmina Vet Life Canine Dry Dog FoodFarminaFarmina Pet Foods - - Farmina Vet Life Canine Dry Dog FoodDry // No. 16 on the labelIams Advanced Health Mobility Support Dry Dog FoodIamsIams Advanced Health Mobility Support Dry Dog FoodDry // No. 16 on the labelRoyal Canin Veterinary Dental Small Dog Dry Dog FoodRoyal CaninRoyal Canin Veterinary Dental Small Dog Dry Dog FoodDry // No. 16 on the labelRoyal Canin Veterinary Urinary SO Dry Dog FoodRoyal CaninRoyal Canin Veterinary Urinary SO Dry Dog FoodDry // No. 16 on the label
An ingredient on its own tells you very little. What matters is how much of it there is and where it sits in the list. That is why we weigh the top five rather than reacting to any single name further down. Back to the wiki

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