What kind of ingredient this is
duck sits in the animal protein family. Named animal proteins are the foundation of the Protein Quality Index. The named-species multiplier rewards single-species clarity (chicken meal beats poultry meal, by-product clarity is graded separately).
Where duck sits in the Sniff System
The methodology treats duck as a quality input. It contributes positively to the relevant Sniff rubric components and does not trigger any controversial-ingredient penalty.
Every methodology choice is published, citeable, and subject to revision when new evidence arrives. Read the full Sniff methodology for the formulas behind every score component, or file a correction if you think this position is wrong.
Where you'll see duck in the catalog
Sniff has scored 130 dog foods that list duck as a primary protein source. Of those, 7 earned an A, 36 earned a B, 76 earned a C, 10 earned a D, and 1 earned an F.
- NuloNulo Challenger Puppy & Adult Gamebird Quarry Duck, Turkey & Guinea Fowl Dry Dog Food, 24-lb bag82
- Taste of the WildTaste of the Wild Ancient Wetlands with Ancient Grains Dry Dog Food, 28-lb bag82
- ACANAACANA Limited Ingredient Duck & Pumpkin Wholesome Grains Dry Dog Food, 22.5-lb bag80
- Blue BuffaloBlue Buffalo Wilderness Adult High Protein Natural Duck & Wholesome Grains Dry Dog Food, 24-lb bag78
- ORIJENFreshPrey Chicken & Duck Recipe With Grains76
- FarminaFarmina N&D Quinoa Canine Adult Skin & Coat Duck, Coconut & Turmeric Dry Dog Food, 11-lb bag75
Similar ingredients in the catalog
Sniff's semantic graph clusters these ingredients near duck by formulation profile. Each links to its own ingredient page.