Bison

Bison are raised and slaughtered for meat. Muscle used in pet food is separated from bone and prepared for mixing. Unlike bison meal, meat listed simply as bison arrives without first being rendered.^2,7,9

1. 01 // Source Slaughtered bison The meat comes from bison raised for food, whether finished on pasture or with grain.
2. 02 // Process Meat separated Muscle is cut or mechanically separated from bone; meat listed as bison excludes bone.
3. 03 // Process Prepared for mixing The raw meat is sized for mixing with other ingredients before the kibble is cooked.
4. 04 // Output Fresh bison meat Raw muscle reaches the kibble plant with most of its original water still present.

1. 01

   Adds animal protein

   Bison muscle contributes protein. Because fresh meat carries substantial water, its weight before cooking overstates its share of the finished kibble.^2,8,9

2. 02

   Names a distinct meat

   A named bison ingredient gives a recipe a distinct meat identity and flavor claim. That says nothing about how much bison the dog eats.^8,10

3. 03

   Uses a smaller supply

   US bison slaughter is small beside cattle slaughter. Manufacturers can offer bison as a named ingredient without making it the recipe's only protein.^6,10

How much Recipes rarely disclose the bison share; under AAFCO's naming rule, a food labeled “with bison” must contain at least 3% bison.⁸

1. Brands say

   Bison contributes real animal protein

   Evidence

   1. Strong
   2. Some
   3. Thin
   4. None

   A study of raw bison striploin measured about 21% protein by fresh weight. Bison is a protein source, but its contribution to a dog's diet depends on the amount in the recipe.^2,8

2. Brands say

   Bison is leaner than beef

   Outruns the evidence

   Evidence

   1. Strong
   2. Some
   3. Thin
   4. None

   A meat study measured 1.94% fat in pasture-finished bison striploin and 3.21% in grain-finished striploin. Its review found overlapping fat ranges for bison and beef. Neither result guarantees a lean finished kibble.²

3. Brands say

   Grass-fed bison protects a dog's health

   Outruns the evidence

   Evidence

   1. Strong
   2. Some
   3. Thin
   4. None

   Researchers compared meat from 20 pasture-finished and 20 pen-finished bison and found differences in its compounds. They did not feed either meat to dogs or measure a canine health outcome.³

4. Brands say

   Bison is especially easy for dogs to digest

   Outruns the evidence

   Evidence

   1. Strong
   2. Some
   3. Thin
   4. None

   A brand calls bison highly digestible. The cited bison studies measured meat composition, not digestion in dogs. They provide no comparison showing that dogs digest bison better than another cooked meat.^2,3,10

5. Owners say

   Bison is safe for every beef-allergic dog

   Outruns the evidence

   Evidence

   1. Strong
   2. Some
   3. Thin
   4. None

   A veterinary dermatologist warns of possible reactions across beef and other ruminant meats, including bison. Separately, undeclared animal DNA appeared in 9 of 10 retail elimination diets tested. Neither finding makes a retail bison food a dependable allergy trial.^1,5