This cool, smart toy, will help your pet have entertainment while spending time playing. This is best for large dogs that can bite hard on toys. At first, I didn't think it would be good for puppies, but it just took longer for me to get the puppies used to it, and it's one of the only things I trust them to chew without me watching. No pieces have broken off so I feel it's a bit more trusting then some treats even! I never leave my dogs unattended with any toys, so be careful. You can add treats, small treats to the inside, for play and hunt. All Sales Final.