I also have noticed that. And aside from eating some raw meat and eggs and rare cooked meat, I think eating "traditional" animals with the proper balance of nutrients (i.e. O3/O6 fats) is important. Bear eats grass-fed meat. I have always been concerned about getting grass-fed bison instead of grain-fed beef, and feel I should be consuming at the very minimum the liver of these animals. I also want to consume lots of wild salmon and other wild seafood. I am not certain that people eating only farm-raised meat, with the skewed fat in those animals, are going to be truly healthy. Just not certain they would be.