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Ingredient file // Fat or oil

Flaxseed

A useful plant omega source with limits

Flaxseed is the whole seed of an oilseed crop, used whole or ground in dog food. It adds oil, fiber and the plant omega-3 fat ALA. Dogs make some EPA from ALA, but flaxseed is a poor substitute for a direct source of EPA and DHA.

Role in the food Supporting nutrient
Flaxseed
What it is
Whole or ground flax seeds that retain their oil, protein and fiber.
Made from
Seeds harvested from flax plants
Main job
Plant omega-3 and fiber
Typical amount
A dog trial tested 3% ground seed as fed
Watch for
Large additions of soaked raw seed
Not the same as
Flaxseed meal

Straight answer

Is Flaxseed safe for dogs?

Read it as plant omega and fiber

Flaxseed low on a bag's list adds ALA and fiber. Check the main protein and fat sources around it. If the food promises fish oil benefits from flaxseed alone, look for a stated source of EPA and DHA. The ingredient name does not tell you whether the seed was ground.

Why it is in the food
Plant omega-3 and fiber

Our read // In our catalog

In 1 of every 2 foods we track

Share of foods that list it

45%

1,439 of the 3,204 foods with an ingredient list on file, from 85 brands. 1,082 dry dog food, 230 wet dog food, 54 frozen dog food.

Each square is 1% of the catalog

Where it sits on the label

Median position 10. In the top five of 61 foods, so it is usually a supporting ingredient.

Top five List position, heaviest first

Above the salt

93%

Almost always listed before the salt, so there is more of it than a pinch.

Price per lb

Foods with it $3.12
All foods $3.25

Median of the cheapest bag price across 913 priced foods, 4% below the catalog. The price is the food's, not the ingredient's.

Who leans on it

11%

of the foods that list it are from Blue. 85 brands use it in total.

The story

An ancient fiber crop, tested as a dog omega

Flax was possibly one of the first crops people domesticated. Farmers in the Fertile Crescent grew it for fiber, food and medicine from about 10,000 BCE, and growers still choose fiber or oil varieties depending on the harvest they want. The oil found industrial work early: Jan van Eyck used linseed oil to preserve paintings around 1400, and an English patent for linoleum flooring made with it followed in 1860.7

Animal feeding came before dog food. Linseed has a long record as a coat conditioner for gloss and a mild laxative feed for horses, the same two jobs dog food brands now sell it on. Supply is large: in 2012 the world grew about 2 million metric tons, and Canada, Russia, China, Kazakhstan and the US produced more than 70% of it. By 2001, veterinary researchers were feeding the seed to 18 dogs to test the coat idea.1,7

The turning point came from dog research. In 2011, researchers fed flaxseed oil to 5 beagles and 5 greyhounds for 3 weeks: plasma EPA rose, but DHA did not. In 2023, a 45-dog trial found flaxseed cake left the red blood cell omega-3 index unchanged after 4 weeks, while fish and krill raised it. Those trials set the limit on flax in dog food: it supplies ALA and some EPA, not the DHA that fish oil brings.2,4

What it is

How it is made

Flax is grown commercially for its oil. Flaxseed for dog food remains the whole seed rather than the cake left after oil pressing. Growers dry it for storage, and processors may grind it to expose the oil.1,7,8

  1. 01 // Source Flax seed pods Oilseed flax produces dry pods containing small, hard seeds rich in oil.
  2. 02 // Process Harvest and dry Growers thresh mature pods and dry the seed further if it is too damp to store.
  3. 03 // Process Grind if needed Grinding breaks the seed coat and gives digestive enzymes better access to the oil.
  4. 04 // Output Whole or ground seed The seed reaches the food plant with its oil inside, unlike oil pressed flaxseed meal.

What is in it

Composition, dry matter

37

% crude fat

The average fat content in tested seeds. Flaxseed brings substantial oil to a recipe, alongside fiber and some protein.

Crude fat 31.2-43.6%6
Crude protein 20.3-27.9%6
Neutral detergent fiber 13.2-33.8%6
Crude fiber 5.7-15.4%6
Ash 3.3-6.2%6

The seed analyzes include raw and processed samples, and fiber varies widely. Oil pressing changes the ingredient: flaxseed meal has less fat and more concentrated protein than whole seed.6,8

Why it is in the bag

A real plant omega-3 source, in modest amounts

  1. Main nutrition
  2. Supporting nutrient
  3. Does a job
  4. Mostly filler

Ingredients are listed by weight. When flaxseed sits mid list, after the main proteins, starches and fats, it may be a few percent of the food. That amount can count: an 18-dog trial coating kibble with 3% ground seed raised blood ALA. It also adds oil and fiber. It does not supply DHA, and near the end of a long list its share is likely too small to change the food's nutrition.1,4,6,13

  1. 01

    Adds plant omega-3

    Flaxseed oil is rich in ALA. Ground whole seed raised blood ALA in a dog trial, though ALA does not supply EPA and DHA directly.1,7

  2. 02

    Adds fiber and bulk

    The seed coat contributes fiber and its mucilage absorbs water. Isolated flaxseed mucilage softened stool in dogs, but that trial did not test whole seed.5,7

  3. 03

    Draws on an oilseed crop

    Flax is grown commercially for oil. Using whole seed draws on that supply and gives a formulator fat, fiber and some protein through one ingredient.6,7

  4. 04

    Keeps the seed oil

    Whole seed retains the oil that pressing removes to make flaxseed meal. That matters when the recipe calls for ALA as well as fiber.7,8

How much A controlled trial coated kibble with 3% whole ground flaxseed as fed; that tested amount is not a standard commercial inclusion rate.1

Our read // The claims

What the evidence supports

Strong: controlled studies in dogs agree. Some: small or mixed dog data. Thin: mechanism or lab work only. None: nothing, or the evidence points the other way.

  1. Brands say

    Flaxseed gives dogs plant omega-3 fat

    Evidence

    1. Strong
    2. Some
    3. Thin
    4. None

    Flaxseed oil averages more than half ALA among its fatty acids. In an 18-dog study, kibble with 3% ground seed raised blood ALA. That supports an ALA claim, not a claim that the seed supplies EPA and DHA directly.1,6,7

  2. Brands say

    Flaxseed improves skin and coat health

    Outruns the evidence

    Evidence

    1. Strong
    2. Some
    3. Thin
    4. None

    An 18-dog seed trial found brief coat improvement with both flaxseed and sunflower seed. In a 30-dog oil trial, coat scores improved across plant oil groups without a difference between oils. Flaxseed has no proven special edge.1,3

  3. Brands say

    Flaxseed fiber keeps dogs regular

    Outruns the evidence

    Evidence

    1. Strong
    2. Some
    3. Thin
    4. None

    In an 11-dog crossover trial, isolated flaxseed mucilage softened stool but did not change fecal weight. The seed contains that fiber, yet the trial did not show whole flaxseed correcting constipation.5,7

  4. Brands say

    Flaxseed works as well as fish oil

    Outruns the evidence

    Evidence

    1. Strong
    2. Some
    3. Thin
    4. None

    In a 45-dog comparison, fish raised the blood EPA and DHA index after 4 weeks; flaxseed cake did not. A krill company sponsored the trial. It tested cake rather than whole seed, but gives no support for equivalence.2,4

The research

Studies worth knowing

Published research we read for this page, dog studies first.

  1. 2023 // Feeding trial, 3 foods

    Fish raised the omega-3 index; flaxseed cake did not2

    45 dogs split into three groups

    Found. After 4 weeks, the red blood cell omega-3 index rose from 1.35 to 1.9% with fish and from 1.36 to 2.36% with krill. Flaxseed cake, giving 1,465 mg ALA daily, made no significant change.

    What it means. Flax in a food does not stand in for fish oil. If you want EPA and DHA, look for a marine source on the label.

  2. 2011 // Feeding trial, 3 weeks

    Flaxseed oil raised EPA in dogs, but not DHA4

    5 beagles and 5 greyhounds

    Found. Flaxseed oil at 100 ml per kg of food raised plasma ALA and EPA steadily from day 0 to day 22. DHA did not rise, and ALA and EPA were still climbing when the trial ended.

    What it means. Dogs convert some flax ALA into EPA. Do not count on flaxseed to raise DHA.

  3. 2001 // Feeding trial, 2 seeds

    Flaxseed coat gains in dogs faded within a month1

    18 healthy dogs

    Found. Flaxseed and sunflower seed both nudged blinded coat scores up, but the gain did not last beyond 28 days. Serum ALA rose in the flaxseed dogs and stayed unchanged in the sunflower dogs.

    What it means. A shinier coat from flaxseed, if you see one, is likely brief and not unique to flax.

  4. 2016 // Feeding trial, 3 diets

    Flaxseed mucilage cut fat digestion and loosened dog stools5

    11 privately owned dogs

    Found. Fat digestibility fell from 96.9% on the control diet to 94.5% with mucilage. Fecal scores moved from 2.8 to 3.7 on a 7 point scale, looser than the ideal 2 to 3, with no change in fecal weight.

    What it means. Large amounts of the seed's gel fiber loosen stool past ideal rather than adding bulk. Whole seed has not been tested this way in dogs.

Straight answers

What owners ask

  1. Q01

    Is it just filler?

    No

    Whole flaxseed contains oil, fiber and protein. It has recipe jobs even when it sits low on the list. Its modest protein contribution does not make it a main protein source.6,7

  2. Q02

    Does ground flaxseed matter?

    Yes

    The hard seed coat limits access to the oil inside. Grinding breaks that barrier. A label saying only flaxseed does not tell you whether the supplier ground it before making the food.1,7

  3. Q03

    Is it the same as fish oil?

    No

    Flaxseed supplies ALA, while fish oil supplies EPA and DHA directly. Dogs converted some ALA to EPA in a small trial, but DHA did not rise. Read an EPA and DHA claim separately from a flaxseed claim.2,4,7

Who uses it

Brands, best sellers and the company it keeps

Top brands, by foods that list it

  1. Blue 160 / 186
  2. Hill's 99 / 116
  3. Wellness 92 / 118
  4. Nulo 72 / 117
  5. Instinct 67 / 98
  6. Merrick 54 / 107
  7. Stella & Chewy's 47 / 85
  8. Fromm 46 / 67
  9. Nutro 42 / 71
  10. Natural Balance 37 / 48

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

Plus 75 more brands.

Amazon best sellers that list it

  1. #1 Blue Life Protection Formula Adult Chicken and Brown Rice Recipe Dry Dog Food
  2. #4 Hill’s Science Diet Light Small & Mini Chicken Recipe Dry Dog Food
  3. #5 Blue Life Protection Formula Adult Small Breed Chicken and Brown Rice Recipe Dry Dog Food
  4. #6 Hill’s Science Diet Adult Sensitive Stomach & Skin Chicken Recipe Dry Dog Food
  5. #8 Diamond Naturals Skin & Coat Formula All Life Stages Salmon & Potato Formula Dry Dog Food
  6. #10 Iams Proactive Health MiniChunks Chicken & Whole Grains Dry Dog Food
  7. #13 Hill’s Science Diet Adult 1-6 Small Bites Chicken & Barley Recipe Dry Dog Food
  8. #21 Hill’s Science Diet Adult 1-6 Chicken & Barley Recipe 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. Mixed Tocopherols 45%
  2. Chicken 42%
  3. Chicken Fat 41%
  4. Peas 38%
  5. Chicken Meal 37%
  6. Natural Flavor 34%
  7. Brown Rice 30%
  8. Oatmeal 21%
  9. Sweet Potatoes 21%
  10. Potatoes 20%
  11. Barley 19%
  12. Carrots 17%

On the shelf

Foods that list Flaxseed

1,439 foods in our catalog list it. These 60 list it highest on the label.

Grandma Lucy’s Artisan Pre-Mix Grain-Free Dog Food TopperGrandma Lucy'sGrandma Lucy’s Artisan Pre-Mix Grain-Free Dog Food TopperTopper // No. 2 on the labelUnconditional Air-Dried Topper: Mobility & Anti-Inflammatory Dog Food TopperUnconditionalUnconditional Air-Dried Topper: Mobility & Anti-Inflammatory Dog Food TopperTopper // No. 2 on the labelUnconditional Air-Dried Topper: Skin & Coat Dog Food TopperUnconditionalUnconditional Air-Dried Topper: Skin & Coat Dog Food TopperTopper // No. 2 on the labelEvanger’s EVx Enhanced Diet Hip & Joint Support Chicken Jerky Dog TreatsEvanger'sEvanger’s EVx Enhanced Diet Hip & Joint Support Chicken Jerky Dog TreatsDog Treats // No. 3 on the labelEvanger’s EVx Enhanced Diet Skin & Coat Support Salmon Jerky Dog TreatsEvanger'sEvanger’s EVx Enhanced Diet Skin & Coat Support Salmon Jerky Dog TreatsDog Treats // No. 3 on the labelHill’s Prescription Diet j/d Joint Care Small Bites Chicken Flavor Dry Dog FoodHill'sHill’s Prescription Diet j/d Joint Care Small Bites Chicken Flavor Dry Dog FoodDry // No. 3 on the labelHill’s Prescription Diet k/d + Mobility Kidney + Joint Care Chicken Flavor Dry Dog FoodHill'sHill’s Prescription Diet k/d + Mobility Kidney + Joint Care Chicken Flavor Dry Dog FoodDry // No. 3 on the labelWysong Anergen Dry Dog FoodWysongWysong Anergen Dry Dog FoodDry // No. 3 on the labelThe Honest Kitchen Whole Grain Chicken & Oat Recipe Whole Food Clusters Dry Dog FoodThe Honest KitchenThe Honest Kitchen Whole Grain Chicken & Oat Recipe Whole Food Clusters Dry Dog FoodDry // No. 4 on the labelWeruva Awesome Functions Awesome Shiny Chicken Breast & Brown Rice Recipe with Veggies & Flaxseed Wet Dog FoodWeruvaWeruva Awesome Functions Awesome Shiny Chicken Breast & Brown Rice Recipe with Veggies & Flaxseed Wet Dog FoodWet // No. 4 on the labelWeruva Awesome Functions Awesome Shiny Chicken & Rice For Skin & Coat Health Wet Dog FoodWeruvaWeruva Awesome Functions Awesome Shiny Chicken & Rice For Skin & Coat Health Wet Dog FoodWet // No. 4 on the labelKoha Duck Entrée : Limited Ingredient Diet Wet Dog FoodKohaKoha Duck Entrée : Limited Ingredient Diet Wet Dog FoodWet // No. 4 on the label
Show 48 more
Unconditional Air-Dried Topper: Immunity & Gut Dog Food TopperUnconditionalUnconditional Air-Dried Topper: Immunity & Gut Dog Food TopperTopper // No. 2 on the labelWeruva Awesome Functions Awesome Shiny Beef & Brown Rice Recipe with Flaxseed Wet Dog FoodWeruvaWeruva Awesome Functions Awesome Shiny Beef & Brown Rice Recipe with Flaxseed Wet Dog FoodWet // No. 4 on the labelKoha Kangaroo : Limited Ingredient Diet Kangaroo Entrée Grain-Free Wet Dog FoodKohaKoha Kangaroo : Limited Ingredient Diet Kangaroo Entrée Grain-Free Wet Dog FoodWet // No. 4 on the labelKoha Limited Ingredient Diet Chicken Entrée Wet Dog FoodKohaKoha Limited Ingredient Diet Chicken Entrée Wet Dog FoodWet // No. 4 on the labelWeruva Dogs in the Kitchen BFF Fun Size Meals Roll The Dice Chicken & Rice Wet Dog FoodWeruvaWeruva Dogs in the Kitchen BFF Fun Size Meals Roll The Dice Chicken & Rice Wet Dog FoodWet // No. 4 on the labelWeruva Dogs in the Kitchen BFF Fun Size Meals I’m In Luck With Duck & Rice Wet Dog FoodWeruvaWeruva Dogs in the Kitchen BFF Fun Size Meals I’m In Luck With Duck & Rice Wet Dog FoodWet // No. 4 on the labelInstinct Original Grain-Free Wet Dog FoodInstinctInstinct Original Grain-Free Wet Dog FoodWet // No. 4 on the labelInstinct Original Food Real Beef Recipe Wet Dog FoodInstinctInstinct Original Food Real Beef Recipe Wet Dog FoodWet // No. 4 on the labelWellness Core Bowl Boosters Functional Toppers Skin & Coat Health Dog Food TopperWellnessWellness Core Bowl Boosters Functional Toppers Skin & Coat Health Dog Food TopperTopper // No. 4 on the labelThe Honest Kitchen Whole Grain Chicken & Oat Recipe Whole Food Clusters Puppy Blend Dry Dog FoodThe Honest KitchenThe Honest Kitchen Whole Grain Chicken & Oat Recipe Whole Food Clusters Puppy Blend Dry Dog FoodDry // No. 4 on the labelThe Honest Kitchen Whole Grain Chicken & Oat Recipe Whole Food Clusters Small Breed Blend Dry Dog FoodThe Honest KitchenThe Honest Kitchen Whole Grain Chicken & Oat Recipe Whole Food Clusters Small Breed Blend Dry Dog FoodDry // No. 4 on the labelZignature Original Lamb Formula with Probiotics Grain-Free Dry Dog FoodZignatureZignature Original Lamb Formula with Probiotics Grain-Free Dry Dog FoodDry // No. 5 on the labelKismet Shakers Daily Multivitamin Formula Freeze-Dried Chicken Recipe Dog Food TopperKismetKismet Shakers Daily Multivitamin Formula Freeze-Dried Chicken Recipe Dog Food TopperTopper // No. 5 on the labelNutriSource PureVita Duck Dog Entree Wet Dog FoodNutriSourceNutriSource PureVita Duck Dog Entree Wet Dog FoodWet // No. 5 on the labelNutriSource PureVita Turkey Dog Entree Grain-Free Wet Dog FoodNutriSourceNutriSource PureVita Turkey Dog Entree Grain-Free Wet Dog FoodWet // No. 5 on the labelWe Feed Raw Duck Recipe Frozen Dog FoodWe Feed RawWe Feed Raw Duck Recipe Frozen Dog FoodFrozen // No. 5 on the labelWe Feed Raw Beef Frozen Dog FoodWe Feed RawWe Feed Raw Beef Frozen Dog FoodFrozen // No. 5 on the labelCaru Daily Dish Beef Stew Grain-Free Wet Dog FoodCaruCaru Daily Dish Beef Stew Grain-Free Wet Dog FoodWet // No. 5 on the labelCaru Classics Daily Dish Turkey with Wild Salmon Stew Grain-Free Wet Dog FoodCaruCaru Classics Daily Dish Turkey with Wild Salmon Stew Grain-Free Wet Dog FoodWet // No. 5 on the labelKoha Limited Ingredient Diet Salmon Entrée Dog Food TopperKohaKoha Limited Ingredient Diet Salmon Entrée Dog Food TopperTopper // No. 5 on the labelKoha Limited Ingredient Lamb Entrée Grain-Free Wet Dog FoodKohaKoha Limited Ingredient Lamb Entrée Grain-Free Wet Dog FoodWet // No. 5 on the labelKoha Limited Ingredient Diet Beef Entrée Wet Dog FoodKohaKoha Limited Ingredient Diet Beef Entrée Wet Dog FoodWet // No. 5 on the labelKoha Limited Ingredient Diet Venison Entrée Dog Food TopperKohaKoha Limited Ingredient Diet Venison Entrée Dog Food TopperTopper // No. 5 on the labelWeruva Dogs in the Kitchen Awesome Everything Beef, Rice & Veggies Multicare Wet Dog FoodWeruvaWeruva Dogs in the Kitchen Awesome Everything Beef, Rice & Veggies Multicare Wet Dog FoodWet // No. 5 on the labelWeruva Dogs in the Kitchen Awesome Everything Chicken, Rice & Pumpkin Multicare Wet Dog FoodWeruvaWeruva Dogs in the Kitchen Awesome Everything Chicken, Rice & Pumpkin Multicare Wet Dog FoodWet // No. 5 on the labelWeruva Dogs in the Kitchen Awesome Everything Chicken, Rice & Veggies Multicare Wet Dog FoodWeruvaWeruva Dogs in the Kitchen Awesome Everything Chicken, Rice & Veggies Multicare Wet Dog FoodWet // No. 5 on the labelWeruva Dogs in the Kitchen BFF Fun Size Meals Oh So Nice Sirloin Tips & Rice Wet Dog FoodWeruvaWeruva Dogs in the Kitchen BFF Fun Size Meals Oh So Nice Sirloin Tips & Rice Wet Dog FoodWet // No. 5 on the labelThe Honest Kitchen Whole Food Clusters Grain Free Chicken Protein Plus Clusters Dry Dog FoodThe Honest KitchenThe Honest Kitchen Whole Food Clusters Grain Free Chicken Protein Plus Clusters Dry Dog FoodDry // No. 5 on the labelDiamond>Care Diamond Care Sensitive Skin Formula Grain-Free Dry Dog FoodDiamond CareDiamond>Care Diamond Care Sensitive Skin Formula Grain-Free Dry Dog FoodDry // No. 5 on the labelFromm Nutritionals Mobility Supplement Pâté Dog Food TopperFrommFromm Nutritionals Mobility Supplement Pâté Dog Food TopperTopper // No. 5 on the labelSimply Nourish Original Grain Free Small Breed Adult Dry Dog FoodSimply NourishSimply Nourish Original Grain Free Small Breed Adult Dry Dog FoodDry // No. 5 on the labelSimply Nourish Original Grain Free Large Breed Adult Dry Dog FoodSimply NourishSimply Nourish Original Grain Free Large Breed Adult Dry Dog FoodDry // No. 5 on the labelHealth Extension Gently Air Dried Superfoods Salmon Recipe Dry Dog FoodHealth ExtensionHealth Extension Gently Air Dried Superfoods Salmon Recipe Dry Dog FoodDry // No. 5 on the labelInstinct Original Food Real Chicken Recipe Grain-Free Wet Dog FoodInstinctInstinct Original Food Real Chicken Recipe Grain-Free Wet Dog FoodWet // No. 5 on the labelBlue Basics Grain Free Adult Duck Potato Recipe Wet Dog FoodBlueBlue Basics Grain Free Adult Duck Potato Recipe Wet Dog FoodWet // No. 5 on the labelZignature Original Turkey Formula with Probiotics Grain-Free Dry Dog FoodZignatureZignature Original Turkey Formula with Probiotics Grain-Free Dry Dog FoodDry // No. 5 on the labelZignature Original Small Bites Lamb Formula with Probiotics Grain-Free Dry Dog FoodZignatureZignature Original Small Bites Lamb Formula with Probiotics Grain-Free Dry Dog FoodDry // No. 5 on the labelZignature Original Small Bites Turkey Formula with Probiotics Grain-Free Dry Dog FoodZignatureZignature Original Small Bites Turkey Formula with Probiotics Grain-Free Dry Dog FoodDry // No. 5 on the labelWellness Core Bowl Boosters Functional Toppers Joint Health Dog Food TopperWellnessWellness Core Bowl Boosters Functional Toppers Joint Health Dog Food TopperTopper // No. 5 on the labelWellness Core Bowl Boosters Functional Toppers Hearth Health Dog Food TopperWellnessWellness Core Bowl Boosters Functional Toppers Hearth Health Dog Food TopperTopper // No. 5 on the labelBlue Seal Native Level 3 Chicken Meal & Rice Dry Dog FoodBlue SealBlue Seal Native Level 3 Chicken Meal & Rice Dry Dog FoodDry // No. 5 on the labelInstinct Raw Boost Mixers Mobility Support Freeze-Dried Dog Food TopperInstinctInstinct Raw Boost Mixers Mobility Support Freeze-Dried Dog Food TopperTopper // No. 5 on the labelThe Honest Kitchen Grain-Free Chicken Recipe Whole Food Clusters Puppy Blend Dry Dog FoodThe Honest KitchenThe Honest Kitchen Grain-Free Chicken Recipe Whole Food Clusters Puppy Blend Dry Dog FoodDry // No. 5 on the labelThe Honest Kitchen Grain-Free Chicken Recipe Whole Food Clusters Small Breed Blend Dry Dog FoodThe Honest KitchenThe Honest Kitchen Grain-Free Chicken Recipe Whole Food Clusters Small Breed Blend Dry Dog FoodDry // No. 5 on the labelThe Honest Kitchen Grain-Free Chicken Recipe Whole Food Clusters Dry Dog FoodThe Honest KitchenThe Honest Kitchen Grain-Free Chicken Recipe Whole Food Clusters Dry Dog FoodDry // No. 5 on the labelEarthborn Holistic Venture Limited Ingredient Grain-Free Squid & Chickpeas Dry Dog FoodEarthborn HolisticEarthborn Holistic Venture Limited Ingredient Grain-Free Squid & Chickpeas Dry Dog FoodDry // No. 5 on the labelEarthborn Holistic Venture Limited Ingredient Grain-Free Duck Meal & Pumpkin Dry Dog FoodEarthborn HolisticEarthborn Holistic Venture Limited Ingredient Grain-Free Duck Meal & Pumpkin Dry Dog FoodDry // No. 5 on the labelEarthborn Holistic Venture Limited Ingredient Grain-Free Alaska Pollock Meal & Pumpkin Dry Dog FoodEarthborn HolisticEarthborn Holistic Venture Limited Ingredient Grain-Free Alaska Pollock Meal & Pumpkin Dry Dog FoodDry // No. 5 on the label

On labels as

Ground and organic flaxseed compared

One page covers every name. Here is what each label word adds, and whether it changes anything for your dog.

Other wording

Matters for your dog No

Flaxseeds

What it means The plural is just another way of writing the same ingredient. It names the same whole seed and says nothing extra about grinding, growing method or quality.

For your dog Nothing changes for the dog. Flaxseeds and flaxseed on a label describe the same seed, with the same oil, fiber and ALA.

Ground flaxseed

Matters for your dog A little

Ground Flaxseed · Whole Ground Flaxseed

What it means AAFCO's official feed terms, which states typically adopt into feed law, define grinding as breaking material into smaller particles by crushing, shearing or rubbing. The term sets no particle size and says nothing about how recently the seed was milled.

For your dog Grinding opens the hard seed coat. In a 3 month human trial, 30 g of milled flaxseed raised plasma ALA and whole seed did not. In kibble, makers grind ingredients into a coarse meal before cooking, so the label word likely matters most in fresh, frozen and topper foods.1,9,12,14,15,16

  1. Strong
  2. Some
  3. Thin
  4. None

Organic flaxseed

Matters for your dog A little

Organic Flaxseed

What it means The USDA National Organic Program defines organic. The field must have had no prohibited substances applied for 3 years before harvest and must keep buffers from neighboring sprayed land. It does not promise more ALA or better nutrition.

For your dog A review of 343 crop studies found detectable pesticide residues 4 times as often in conventional crops, and more antioxidants in organic ones; an organic farming trust helped fund it. We found no study of organic flaxseed itself, and none measuring a health effect in dogs.10,11

  1. Strong
  2. Some
  3. Thin
  4. None
Whole Flaxseed

Sources

What we read

Checked September 1, 2026.

  1. 1 Effects of dietary flax seed and sunflower seed supplementation on normal canine serum polyunsaturated fatty acids and skin and hair coat condition scores Veterinary Dermatology, 2001 // Journal
  2. 2 Comparison of Fish, Krill and Flaxseed as Omega-3 Sources to Increase the Omega-3 Index in Dogs Veterinary Sciences, 2023 // Journal
  3. 3 Effects of dietary camelina, flaxseed, and canola oil supplementation on inflammatory and oxidative markers, transepidermal water loss, and coat quality in healthy adult dogs Frontiers in Veterinary Science, 2023 // Journal
  4. 4 Evaluation of breed effects on n-3 PUFA metabolism with dietary flaxseed oil supplementation in dogs British Journal of Nutrition, 2011 // Journal
  5. 5 Dietary supplementation with flaxseed mucilage alone or in combination with calcium in dogs: effects on apparent digestibility of fat and energy and fecal characteristics International Journal of Obesity, 2016 // Journal
  6. 6 Linseeds Feedipedia (INRAE, CIRAD, AFZ, FAO), 2013 // Database
  7. 7 Linseeds Feedipedia (INRAE, CIRAD, AFZ, FAO), n.d. // Database
  8. 8 Linseed meal Feedipedia (INRAE, CIRAD, AFZ, FAO), n.d. // Database
  9. 9 Bioavailability of alpha-linolenic acid in subjects after ingestion of three different forms of flaxseed Journal of the American College of Nutrition (Europe PMC record, PMID 18689552), 2008 // Journal
  10. 10 7 CFR § 205.202 Land requirements (USDA National Organic Program) Legal Information Institute, Cornell Law School, n.d. // Regulator
  11. 11 Higher antioxidant and lower cadmium concentrations and lower incidence of pesticide residues in organically grown crops: a systematic literature review and meta-analyses British Journal of Nutrition, 2014 // Journal
  12. 12 Centrifugal Sifter Provides Pet Food Extruder Protection Powder & Bulk Solids, 2017 // Industry
  13. 13 Animal Food Labeling and Pet Food Claims US Food and Drug Administration, n.d. // Regulator
  14. 14 Free Public Access to AAFCO's Official Publication "Chapter Six" Association of American Feed Control Officials, 2025 // Regulator
  15. 15 WSR 99-17-043: Commercial feed rules (WAC 16-200-750) Washington State Department of Agriculture, Washington State Register, 1999 // Regulator
  16. 16 AAFCO Official Publication 2024, Chapter 6: Official Feed Terms and Ingredient Definitions Association of American Feed Control Officials, 2024 // Regulator
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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