Ingredient file // Animal protein
Duck Gizzards
Lean duck muscle, not an organ meat
Duck gizzards are the duck's muscular stomach, split, rinsed of grit and peeled of their tough lining. In raw and freeze-dried food they add lean protein like any duck muscle, but none of the vitamins duck liver brings.
- What it is
- The muscular stomach of a duck, split open, rinsed of grit and peeled of its tough inner lining.
- Made from
- Gizzards pulled from ducks at slaughter
- Main job
- Lean duck muscle protein
- Typical amount
- Not published
- Watch for
- Raw pathogens in frozen and freeze-dried formats
- Not the same as
- Duck liver
Straight answer
Is Duck Gizzards safe for dogs?
Count it as duck meat, not organ
Gizzards show up beside duck, heart and liver in raw and freeze-dried recipes. Count them as more duck muscle. The vitamins come from liver, so make sure liver is on the list too. Handle the food like raw poultry, and skip it for a dog with a diagnosed chicken allergy unless a vet trial clears duck.
- Why it is in the food
- Lean duck muscle protein
- How common
- Listed by 9 of the 3,204 foods we track
Our read // In our catalog
In 1 of every 356 foods we track
Share of foods that list it
<1%
9 of the 3,204 foods with an ingredient list on file, from 6 brands. 4 frozen dog food, 3 freeze-dried dog food, 1 wet dog food.
Each square is 1% of the catalog
Where it sits on the label
Median position 3. In the top five of 8 foods, so it is usually a main ingredient.
Above the salt
Almost always listed before the salt, so there is more of it than a pinch.
Price per lb
Median of the cheapest bag price across 2 priced foods, 356% above the catalog. The price is the food's, not the ingredient's.
Who leans on it
22%
of the foods that list it are from OC Raw Dog. 6 brands use it in total.
What it is
How it is made
Every duck slaughtered for meat yields giblets: heart, liver and gizzard. The gizzard is a thick muscle that grinds food with swallowed grit, so plants open and clean it before it goes to sale.1,4,8
- 01 // Source Duck viscera One gizzard per bird, 31 to 97 g in a Czech study, about 1.6 to 5% of carcass weight.
- 02 // Process Split and flushed A saw opens each gizzard and water jets flush out the stones and other contents.
- 03 // Process Lining peeled Peelers strip the tough inner membrane, leaving only the muscular wall.
- 04 // Output Cleaned gizzards Lean muscle, about three-quarters water, shipped chilled or frozen to raw and freeze-dried food makers.
What is in it
Composition, dry matter
79-84
% protein
Protein in duck gizzard on a dry basis, across 72 gizzards in a Czech study. Raw, it is about three-quarters water.
Calculated from as-fed figures. Organically raised ducks had the fattiest gizzards and wild ducks the most protein-rich. The authors think a coarse wild diet could build more gizzard muscle, so farming system shifts the numbers.1
Why it is in the bag
What the manufacturer gets
-
01
Lean muscle protein
Gizzard is about 80% protein and 2.5 to 5% fat on a dry basis, far leaner than duck liver, so it raises protein without adding much fat.1,3
-
02
A by-product, named
AAFCO puts giblets, the heart, gizzard and liver, inside its poultry by-products definition. Naming duck gizzards on the label tells you which by-product went in, instead of a catch-all term.4
-
03
Keeps the recipe one species
Using the duck's own giblets keeps a recipe to a single animal. That does not make it safe for chicken-allergic dogs, since poultry proteins cross-react.5
How much No source publishes how much gizzard a recipe holds or tests it in dogs; each duck yields one gizzard of 31 to 97 g.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.
-
Brands say
Duck gizzards are a lean, high-protein meat
Evidence
- Strong
- Some
- Thin
- None
In 72 duck gizzards, protein ran 18.7 to 21.6% as fed and fat 0.6 to 1.2%, about 80% protein on a dry basis. It is lean muscle, though raw it is three-quarters water.1
-
Owners say
Gizzards are organ meat, rich in vitamins
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
The gizzard is the bird's muscular stomach. USDA has no duck gizzard entry, but lists raw chicken gizzard at 19 µg of vitamin A per 100 g and duck liver at 12,000. Nutritionally it is muscle.1,2,3
-
Critics say
Giblets and by-products are just filler
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
AAFCO counts gizzards among the giblets, with heart and liver. At about 80% protein on a dry basis, gizzard is a real protein source. The fair complaint is only that it lacks liver's vitamins.1,4
Straight answers
What owners ask
-
Q01
Is it just filler?
NoIt is duck muscle, about 80% protein once the water is gone, with little fat. Filler would add bulk without nutrition. Gizzard adds the same kind of protein as the duck meat beside it.1
-
Q02
Does it count as organ meat?
Not reallyIt is an organ, but a muscular one. Chicken gizzard carries 19 µg of vitamin A per 100 g against 12,000 in duck liver. For organ nutrition, look for liver on the list.2,3
-
Q03
Is duck fine for a chicken-allergic dog?
Not reliablyPoultry proteins overlap. In one serum study, 97% of samples from dogs with chicken IgE also recognized duck. Try duck only inside a vet-run elimination trial, and judge by symptoms, not the label.5
-
Q04
Does freeze-drying kill the bacteria?
NoFreeze-drying is not a kill step. A Thai study of 17 raw pet foods, 2 of them freeze-dried, concluded that freezing and drying may reduce contamination but do not eradicate it. Handle it like raw poultry.7
Who uses it
Brands, best sellers and the company it keeps
Top brands, by foods that list it
Foods that list it / all the brand's recipes we track.
Usually listed with, share of the foods that list it
- Duck 67%
- Duck Heart 67%
- Broccoli 67%
- Duck Liver 67%
- Green Beans 56%
- Ground Duck Bone 33%
- Carrots 33%
- Spinach 33%
- Duck with Ground Bone 33%
- Organic Chia Seed 22%
- Apples 22%
- Fish Oil 22%
On the shelf
Foods that list Duck Gizzards
9 foods in our catalog list it, highest on the label first.
Viva RawViva Raw Complete Diet Duck Frozen Dog Food
Vital EssentialsVital Essentials Duck Mini Patties Freeze-Dried Dog Food
Vital EssentialsVital Essentials Raw Entrées Duck Entree Patties Frozen Dog Food
Bones & CoBones & Co Cage-Free Duck Raw - The Bones & Co. Frozen Dog Food
OC Raw DogOC Raw Dog Duck & Produce Wet Dog Food
OC Raw DogOC Raw Dog Duck & Produce Freeze-Dried Dog Food
SmallbatchSmallbatch Duck Sliders Freeze-Dried Dog Food
SmallbatchSmallbatch Raw Duck Sliders Frozen Dog Food
Earth AnimalEarth Animal Wisdom Air-Dried From the Air Recipe Dog Food Topper Sources
What we read
Checked October 1, 2026.
- 1 Quantitative and qualitative properties of giblets from conventional, organic, and wild ducks
- 2 Chicken, gizzard, all classes, raw
- 3 Duck, domesticated, liver, raw
- 4 What's in the Ingredients List?
- 5 Extensive protein hydrolyzation is indispensable to prevent IgE-mediated poultry allergen recognition in dogs and cats
- 6 Get the Facts! Raw Pet Food Diets can be Dangerous to You and Your Pet
- 7 Contamination factors associated with surviving bacteria in Thai commercial raw pet foods
- 8 US4608732A: Gizzard harvesting process