What kind of ingredient this is
pork liver 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 pork liver sits in the Sniff System
The methodology treats pork liver 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 pork liver in the catalog
Sniff has scored 118 dog foods that list pork liver as a primary protein source. Of those, 3 earned an A, 33 earned a B, 81 earned a C, 1 earned a D, and 0 earned an F.
- Hill's Prescription DietHill's Prescription Diet i/d Digestive Care with Turkey Wet Dog Food, 13-oz, case of 1275
- Hill's Science DietHill's Science Diet Adult Small Breed & Mini Breed Chicken & Beef Variety Pack Wet Dog Food, 5.8-oz can, case of 1275
- Hill's Science DietHill's Science Diet Variety Pack Adult Wet Dog Food, 13-oz, case of 1275
- ACANAACANA Singles Limited Ingredient Pork & Squash Grain-Free High-Protein Dry Dog Food, 22.5-lb bag74
- Farmina Vet LifeFarmina Vet Life Derma Management Pork Canine Wet Dog Food, 10.58-oz can, case of 672
- Hill's Prescription DietHill's Prescription Diet i/d Digestive Care with Turkey Minced Wet Puppy Food, 13-oz can, case of 1272
Similar ingredients in the catalog
Sniff's semantic graph clusters these ingredients near pork liver by formulation profile. Each links to its own ingredient page.