The Kong toys are made of an extra durable non-toxic puncher resistant rubber that makes a great toy for most dogs, even heavy chewers. The snowman shaped Kong is hollow inside where you can put globs of peanut butter, cream cheese, wet dog food and Greek yogurt. Place the stuffed Kong in the freezer and make tasty frozen lickible toy treat dispenser that is safe to leave your dog home alone with and will keep them entertained for hours. Kong toys can come in 3 levels of chewing intensity, Puppy Kong, Medium Kong and Extreme Kong.