Ingredient file // Vitamin or mineral
Salmon Bone
Ground fish bone doing a mineral supplement's job
Salmon bone is the backbone and frame left after filleting, ground fine or dried to a powder. In raw and freeze-dried recipes it supplies the calcium and phosphorus that muscle meat lacks, the same job a mineral supplement does.
- What it is
- Salmon backbone and frame bones, ground or powdered, used as a calcium and phosphorus source in dog food.
- Made from
- Salmon frames left after filleting
- Main job
- Calcium and phosphorus source
- Typical amount
- Not published
- Watch for
- Calcium excess in large-breed puppy diets
- Not the same as
- Salmon meal or salmon oil
Our read // In our catalog
In 1 of every 1023 foods we track
Share of foods that list it
0%
3 of the 3,068 foods with an ingredient list on file, from 1 brand. 2 frozen dog food, 1 freeze-dried dog food.
Each square is 1% of the catalog
Where it sits on the label
Median position 5. In the top five of 3 foods, so it is usually a main ingredient.
Who leans on it
100%
of the foods that list it are from Tucker's. 1 brand use it in total.
What it is
How it is made
Filleting salmon leaves the frame: backbone, ribs and some flesh. Norwegian fisheries alone produce more than 600,000 tons of by-products a year. Bone is the mineral part of that leftover, sold ground or as powder.1,3
- 01 // Source Salmon frames The backbone and ribs left after the fillets are cut, still carrying some flesh and fat.
- 02 // Process Flesh removed Researchers stripped soft tissue with protease enzymes or by boiling. Boiled bone kept far more fat.
- 03 // Process Dried and ground In the human calcium trial, cleaned bones were freeze-dried for 74 hours, then milled to powder.
- 04 // Output Salmon bone A mineral powder, or bone ground fine with the meat in frozen and freeze-dried raw recipes.
What is in it
Composition, dry matter
16-26
% calcium
Calcium on a dry basis in three salmon bone samples. Gram for gram that approaches a calcium supplement, so a small amount sets the recipe's level.
Why it is in the bag
What the manufacturer gets
-
01
Calcium where meat has little
Muscle meat is low in calcium. Bone at roughly 16 to 26% calcium dry corrects that. In 95 homemade raw rations without enough of it, 10% supplied under 25% of recommended calcium.1,4
-
02
Phosphorus comes with it
Salmon bone carries about 9 to 16% phosphorus dry, so it adds both minerals at once, at roughly 1.3 to 1.8 parts calcium per part phosphorus.1
-
03
A by-product with a use
Norwegian fisheries produced more than 600,000 tons of by-products a year, and about 180,000 tons were dumped at sea. Bone gives part of that a market.1
How much No source publishes a recipe share; in pig trials, fish bone supplied 71 to 86% of the calcium in diets holding 0.7% calcium.3
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.
-
Vets say
Too much calcium harms large-breed puppies
Evidence
- Strong
- Some
- Thin
- None
Controlled growth trials, led by work in Great Danes, tied excess calcium to skeletal disease, and a review finds dogs reaching about 30 kg or more most at risk. Bone matters here only if a recipe overshoots.5
-
Brands say
Salmon bone is a well-absorbed calcium source
Evidence
- Strong
- Some
- Thin
- None
In a 10-man crossover trial, salmon bone calcium was absorbed at 22.5% against 27.4% for calcium carbonate. Pigs absorbed it as well as carbonate. No one has measured it in dogs.1,3
-
Brands say
Natural bone calcium beats synthetic supplements
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
The human data run the other way: 22.5% absorbed from salmon bone, 27.4% from carbonate. One pig study favored enzyme-cleaned bone, a repeat found no significant edge, and no dog data exist.1,3
-
Owners say
Bone makes a raw diet complete
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
In 95 homemade raw rations for German dogs, 60% had at least one major imbalance, and 10% supplied under 25% of recommended calcium. Bone covers calcium and phosphorus, not zinc, copper, iodine or vitamin D.4
-
Owners say
Fish bones are dangerous for dogs
Outruns the evidence
Evidence
- Strong
- Some
- Thin
- None
A referral study of 129 dogs with lodged bones named chicken, beef and turkey among known origins, and 54 bones were of unknown origin. Bone ground fine into a formulated food is a different object, and we found no injury reports tied to it.6
Straight answers
What owners ask
-
Q01
Is it just filler?
NoIt is the mineral source. At roughly 16 to 26% calcium on a dry basis, a small amount sets the calcium level of a raw recipe. Filler would have no job.1
-
Q02
Why is calcium carbonate listed too?
Fine-tuningBone calcium varies, from 157 to 261 g/kg dry across three salmon bone samples. Added minerals let a formulator hit exact targets, and bone does not cover the zinc, copper or iodine many homemade raw rations lacked.1,4
-
Q03
Does it carry mercury or lead?
Very littleAcross three salmon bone samples, mercury stayed at or under 0.03 mg/kg and lead at or under 0.11 mg/kg dry, and the authors called non-essential elements low. That is one research group, not a guarantee for every supplier.1
Who uses it
Brands, best sellers and the company it keeps
Top brands, by foods that list it
Usually listed with, share of the foods that list it
- Salmon 100%
- Pumpkin 100%
- Taurine 100%
- Zinc Amino Acid Complex 100%
- Vitamin E 100%
- Calcium Carbonate 67%
- Salmon Organ 67%
- Coconut Flour 67%
- Beef 33%
- Beef Heart 33%
- Beef Bone And Marrow 33%
- Mixed Tocopherols 33%
On the shelf
Foods that list it
3 foods in our reviews list it. Here are some of them.
Our read // On the bag
Read it as the recipe's calcium supplement
Salmon bone sitting just behind salmon and organ is the mineral half of a prey-style recipe, which is normal. Check that the bag says complete and balanced for your dog's life stage, especially for a large-breed puppy, and do not add bone or calcium on top.
Sources
What we read
Checked October 1, 2026.
- 1 Calcium from salmon and cod bone is well absorbed in young healthy men: a double-blinded randomised crossover design
- 2 Chemical composition, mineral content and amino acid and lipid profiles in bones from various fish species
- 3 Fish bones: a highly available calcium source for growing pigs
- 4 Intake of minerals, trace elements and vitamins in bone and raw food rations in adult dogs
- 5 Factors that modify the effect of excess calcium on skeletal development in puppies
- 6 Outcomes of esophageal and gastric bone foreign bodies in dogs
- 7 Get the Facts! Raw Pet Food Diets can be Dangerous to You and Your Pet