Ingredient file // Ingredient
Hydrolyzed Soy Protein
Soy protein broken down into smaller fragments by enzyme treatment.
Our read // In our catalog
In 1 of every 229 foods we track
Share of foods that list it
0%
11 of the 2,523 foods with an ingredient list on file, from 2 brands. All dry dog food.
Each square is 1% of the catalog
Where it sits on the label
Median position 2. In the top five of 10 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 11 priced foods, 93% above the catalog. The price is the food's, not the ingredient's.
Who leans on it
91%
of the foods that list it are from Royal Canin. 2 brands use it in total.
What it is
Why it turns up in dog food
- The smaller fragments absorb readily and are less likely to be recognized by the immune system, which is why hydrolysed proteins are used in sensitivity diets.
Who uses it
Brands, best sellers and the company it keeps
Top brands, by foods that list it
Amazon best sellers that list it
Rank on Amazon's dog food best seller list, checked October 2026.
Usually listed with, share of the foods that list it
- Natural Flavor 91%
- Vegetable Oil 82%
- Fish Oil 82%
- Monocalcium Phosphate 55%
- Brewers Rice 55%
- Chicken Fat 55%
- Potatoes 36%
- Coconut Oil 36%
- Potato Protein 36%
- Calcium Carbonate 36%
- Dried Plain Beet Pulp 36%
- Choline Chloride 27%
On the shelf
Foods that list it
11 foods in our reviews list it. Here are some of them.