Winnie Lou Bison Heart Tidbits is single-ingredient, freeze-dried, and 100% grass-fed bison heart. Full of Co-Q10, which supports the cardiovascular system of dogs and is a compound made naturally in the body that is used for cell growth and to protect cells from damage. These treats are the PERFECT size for those tiny pups in your life or for training, with over 100 tiny treats in this bag! High-quality protein and no added salt, sugar, glycerin, or preservatives! 2 oz. bag