The KONG Activity Ball is the perfect toy for active puppies. Fill the center of the Activity Ball with KONG Puppy Easy Treat Paste, Snacks or Ziggies and let the fun begin. The treat delivery feature keeps puppies entertained while enhancing their intellectual development. - Perfect for use with KONG Stuff'N Puppy Easy Treat, Puppy Snacks or Puppy Ziggies paste. - Perfect for teaching your puppy to fetch and pick up - Patented Denta-Ridges help clean teeth - Soft gummy puppy formula great for soothing gums - Available in three sizes: Small, Medium & Large - Perfect for dogs up to nine months old