Real Food, Real Nutrition, Real Dog Treats™ ONLY TWO INGREDIENTS, PURE NATURAL BEEF LIVER & REAL APPLE Pet owners and in particular dog trainers, have discovered Benny Bullys® Dog Treats as a nutritious, pure and natural alternative to traditional dog treats. We added real apple to the beef liver in our original Benny Bullys Liver Chops®, making Benny Bullys® Plus a blend of nutritious and delicious pure natural ingredients.