Natural Nubz Beef Dog Treats. This wholesome snack is crafted with your dog's health and taste buds in mind. That's why these limited-ingredient treats contain delicious beef flavor and no artificial colors, flavors, or preservatives. Made with a highly digestible formula, these longer-lasting natural dog treats keep furry friends occupied and entertained. Plus they help clean teeth as dogs chew, so your dog can enjoy a beautiful smile while chewing.