Texas Bison Knuckle, Large; Our large bison knuckles average 2 lbs. This is the largest knuckle available anywhere. Our bison knuckles are from free range, grass fed Texas Bison. These bison knuckles are very large and are reserved for the largest of breed and strongest of jaws. These knuckles still have a good amount of smoke cured meat on them and your dog will spend hours and hours with these bones.