RUFFIN' IT Healthfuls Duck & Sweet Potato Jerky Dog Treats are su-paw tasty and healthy, too. These treats are made of just two ingredients. Real duck breast is wrapped around a bite-sized piece of sweet potato for a sweet and savory treat. They’re paw-fect for rewarding puppies, adults and senior dogs. The two-ingredient formula means your best friend is getting only the good stuff. The treats are free of artificial preservatives, colors and flavors. They’re also free of corn, wheat and soy, so they’re paw-some for pups with food sensitivities.