This biscuits contain peanut butter, in the form of PB2, which is safe for dogs and is a good source of protein, heart healthy monounsaturated fats, vitamin B,Niacin, e vitamin E. Fish Oil, high in omega-3 fatty acids, is effective in supporting heart health, relieving arthritis, reducing itchy e flaking skin, and giving a shiny coat while helping to fight cancer and promoting a healthy immune system.