Type: Plant-based protein and filler
Source: Ground defatted soybeans
Soy Flour in Dog and Cat Food
Soy flour is finely milled soybeans with the oil mostly removed, providing a concentrated but less refined plant protein source.
Why It Appears on Pet Food Labels
- Cheap, high-protein extender to boost protein claims without more meat
- Adds binding and texture in wet foods
- Contains some fiber and nutrients but often criticized as lower-quality vs. animal proteins
Where It Is Commonly Found
- Budget and mid-range canned/wet dog foods
- Grain-inclusive or plant-heavy formulas
Label Context
Early in the list means significant amount; watch for dogs with soy allergies or thyroid issues—some sources link soy to goitrogenic effects.
Educational Note
This page is part of the PetFoodDecoded Label Ingredient Library and is provided for educational reference only.