The Squirrel Dude is one of the most fun dog toys that my Brittany Spaniel and I have ever encountered! It is a lot more solid then even the Kong Extreme and because of it's shape, its bounce is really fun and unpredictable!!!! It's an interactive toy and definately keeps my Brittany happy and on the go. I fill it with the Busy Buddy - Buddy Berry product and she seriously goes nuts (not pun intended) for it:) It comes in 3 sizes and she has the large size.