I would recommend the Kong Dog Toys to anyone who has a dog. These are very durable and will keep your dog entertained for quite a while. You can buy paste or treats made specifically for the Kong, or you can just smear some peanut butter or cheese from a can inside (make sure your dog is not allergic to whatever you use) and dogs just love the challenge of getting every last bit of goodies out of the toy. These are useful for puppy crate training, too. When you are putting puppy in the crate, put his Kong filled with goodies in the crate with him. That should be enough to keep his attention so that he won't even know you've left the room. My Gizmo is a really rough and tumble Boston Terrier, and it took him about 1 ½ years to wear out his first Classic Kong. So then I purchased the black, Extreme Kong and it is showing no sign of wearing out after 2 years. Most toys don't last for more than a couple of weeks with Gizmo.