Earthborn Holistic · Dry · Grain Free · 25 lb With  lean, red meat bison meal as the first ingredient, your dog is ensured  high protein levels that help develop and sustain energy and lean muscle  mass. Bison meal and lamb meal are lean, red meat proteins that are  rich in balanced amino acids which are important building blocks for a  healthy body. Egg protein is the biological standard that all other  proteins are compared against. Rich protein sources like these help  build a strong foundation for your dog's overall health.