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Ingredient file // Named animal protein

Fish Oil

Oil extracted from fish, without the species being named.

Fish Oil

Our read // In our catalog

In 1 of every 4 foods we track

Share of foods that list it

23%

516 of the 2,250 foods we track, from 31 brands. 406 dry dog food, 92 wet dog food, 9 dog food topper.

Each square is 1% of the catalog

Where it sits on the label

Median position 13. In the top five of 2 foods, so it is usually a minor ingredient.

Top five List position, heaviest first

Above the salt

73%

Listed before the salt in 73% of foods. In the rest it is under about 1% of the recipe.

Price per lb

Foods with it $3.33
All foods $3.24

Median of the cheapest bag price across 352 priced foods, about level with the catalog. The price is the food's, not the ingredient's.

Who leans on it

27%

of the foods that list it are from Royal Canin. 31 brands use it in total.

What it is

Why it turns up in dog food

  • A source of EPA and DHA omega 3 fatty acids, linked to coat condition, skin comfort and joint health. A named fish would be more transparent.

Who uses it

Brands, best sellers and the company it keeps

Top brands, by foods that list it

  1. Royal Canin 141
  2. Blue 73
  3. Purina 53
  4. Hill's 39
  5. Eukanuba 21
  6. Merrick 20
  7. Authority 19
  8. Acana 17
  9. The Honest Kitchen 15
  10. Nutro 13

Plus 21 more brands.

Amazon best sellers that list it

  1. #8 Purina Pro Plan Adult Sensitive Skin & Stomach Salmon & Rice Formula Dry Dog Food
  2. #16 Purina Pro Plan Adult Small Breed Shredded Blend Chicken & Rice Formula Dry Dog Food
  3. #22 Purina Pro Plan Adult Sensitive Skin & Stomach Small Breed Formula Dry Dog Food
  4. #24 Purina Pro Plan Puppy Chicken & Rice Formula Dry Dog Food
  5. #26 Royal Canin Small Adult Dry Dog Food
  6. #27 Blue Life Protection Formula Senior Chicken and Brown Rice Recipe Dry Dog Food
  7. #30 Blue Life Protection Formula Puppy Chicken and Brown Rice Recipe Dry Dog Food
  8. #31 Purina One SmartBlend Sensitive Systems Formula Adult Premium 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. Natural Flavor 52%
  2. Chicken Fat 49%
  3. Chicken 44%
  4. Brewers Rice 34%
  5. Dried Plain Beet Pulp 29%
  6. Brown Rice 28%
  7. Chicken By-Product Meal 26%
  8. Chicken Meal 25%
  9. Corn 22%
  10. Wheat Gluten 22%
  11. Peas 18%
  12. Barley 18%

On the shelf

Foods that list it

516 foods in our reviews list it. Here are some of them.

Authority Sensitive Stomach & Skin Shreds in Broth Adult Dog Meal Dog Food Topper90.0% proteinBlue True Solutions Mobility Support Wet Dog Food31.8% protein
Show 59 more Purina Pro Plan Sport Adult High Protein Beef & Bison Entrée Classic Wet Dog Food45.5% proteinEukanuba Puppy with Lamb & Rice , case of 12 Wet Dog Food39.1% proteinSimply Nourish Original Senior Wet Dog Food58.8% proteinVictor Select Grain Free Chicken and Vegetables Stew Wet Dog Food44.4% proteinVictor Classic Chicken and Rice Formula Pâté Wet Dog Food40.9% proteinDiamond Naturals Chicken Dinner for Adult Dogs & Puppies Wet Dog Food43.2% proteinSimply Nourish Hip & Joint Recipe Wet Dog Food63.3% proteinHill’s Hill’s Science Diet Puppy Chicken & Rice Stew Wet Dog Food25.0% proteinSimply Nourish Skin & Coat Recipe Adult Wet Dog Food60.7% proteinSimply Nourish Gut Health Recipe Adult Wet Dog Food60.7% proteinSimply Nourish Original Puppy Wet Dog Food58.8% proteinPedigree Puppy Chopped Ground Dinner Can, Lamb & Rice Wet Dog Food40.9% proteinRoyal Canin Veterinary Health Nutrition Canine Advanced Mobility Support loaf in sauce Wet Dog Food32.5% proteinPedigree Puppy Pouch, Beef Wet Dog Food50.0% proteinBil-Jac Sensitive Solutions Skin & Stomach Support Chicken & Sweet Potato Recipe in Gravy – Bil-Jac Wet Dog Food38.9% proteinI and Love and You Top That Move Beef With Bison Recipe In Gravy Dog Food Topper44.4% proteinBil-Jac Picky No More Pâté with Chicken & Chicken Liver Wet Dog Food36.4% proteinBil-Jac Sensitive Solutions Digestive & Immune Support Turkey & Pumpkin Recipe in Gravy – Bil-Jac Wet Dog Food38.9% proteinPedigree Puppy Chopped Ground Dinner , Chicken & Beef Wet Dog Food40.9% proteinAbound Beef, Carrot & Tomato in Gravy Wet Dog Food44.4% proteinAbound Chicken, Peas & Sweet Potato in Gravy Wet Dog Food44.4% proteinAbound Pro Vet Formulated Puppy Chicken & Vegetable Stew Wet Dog Food38.9% proteinHealth Extension Digestive Support, Beef & Carrot Entrée in Gravy Wet Dog Food28.0% proteinWellness Core Digestive Health Chicken – Dog Wet Dog Food54.5% proteinWellness Complete Health Lamb & Sweet Potato Wet Dog Food36.4% proteinWellness Core Digestive Health Beef Wet Dog Food54.5% proteinSolid Gold Mighty Mini Turkey Wet Dog Food41.7% proteinSolid Gold Mighty Mini Chicken Food for Toy & Small Dogs Wet Dog Food41.7% proteinSolid Gold Nutrientboost Chicken Meatball Dog Food Topper33.3% proteinTiki Dog Whole Foods Chicken Recipe in Lobster Consommé Wet Dog Food55.6% proteinTiki Dog Whole Foods Chicken Recipe in Crab Consommé Wet Dog Food55.6% proteinTiki Dog Whole Foods Chicken & Tuna Recipe in Chicken Consommé Wet Dog Food55.6% proteinIams Proactive Health With Chicken AND Whole Grain Rice Classic Ground Wet Dog Food36.4% proteinIams Adult Chicken Chunks IN Gravy Wet Dog Food44.4% proteinAuthority Chicken & Carrot Entree Adult Dog Wet Dog Food40.9% proteinIams Adult Lamb Chunks IN Gravy Wet Dog Food44.4% proteinAuthority Chicken & Carrot Entree Puppy Wet Dog Food45.5% proteinIams Adult Beef Chunks IN Gravy Wet Dog Food44.4% proteinIams Proactive Health Senior With Slow Cooked Chicken AND Rice Classic Ground Wet Dog Food43.8% proteinIams Proactive Health Puppy With Chicken AND Rice Classic Ground Wet Dog Food40.9% proteinAuthority Sensitive Stomach & Skin Cuts in Gravy Adult Wet Dog Food47.2% proteinAuthority Everyday Health Beef & Vegetable Entree Adult Dog Wet Dog Food40.9% proteinAuthority Homestyle Adult Wet Dog Food40.9% proteinThe Honest Kitchen Functional Pour Overs: Hip & Joint – Chicken Stew Dog Food Topper45.0% proteinHill’s Science Diet Adult Perfect Weight & Joint Support Large Breed Chicken & Brown Rice Recipe Dry Dog Food25.6% proteinHill’s Hill’s Science Diet Adult Beef & Barley Entrée Wet Dog Food19.1% proteinHill’s Science Diet Puppy Sensitive Stomach & Skin Salmon & Brown Rice Recipe Dry Dog Food27.8% proteinHill’s Prescription Diet k/d + Derm Complete Rice & Egg Recipe Dry Dog Food12.2% proteinHill’s Prescription Diet i/d Puppy Chicken Flavor Digestive Care Dry Dog Food27.8% proteinHealth Extension Digestive Support, Chicken & Pumpkin Entrée in Gravy Wet Dog Food31.8% proteinInstinct Raw Boost RawBoost+ Mixers Multivitamin Recipe Dog Food Topper38.3% proteinInstinct Raw Boost RawBoost+ Mixers Tranquility Recipe Dog Food Topper38.3% proteinRoyal Canin Veterinary Canine Selected Protein PR loaf Wet Dog Food23.8% proteinRoyal Canin Veterinary Health Nutrition Canine Renal Support Early Consult loaf in sauce Wet Dog Food23.8% proteinHill’s Hill’s Prescription Diet z/d Hydrolyzed Chicken Flavor Wet Dog Food13.6% proteinSimply Nourish Natural Solutions Skin & Coat All Life Stage Dog Meal Dog Food Topper75.0% proteinRoyal Canin Canine Care Nutrition Sensitive Skin Care Loaf in Sauce Wet Dog Food37.4% proteinRoyal Canin Size Health Nutrition Medium Puppy Thin Slices in Gravy Wet Dog Food34.9% proteinRoyal Canin Breed Health Nutrition Labrador Retriever Adult Wet Dog Food38.4% protein
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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