This is my dogs favorite toy! He loves it, he will play with it by himself, or with me (playing fetch). He loves it even more when I put a treat inside it for him. Sometimes I will put peanut butter in the center and he will sit there for hours playing with it and gettiing the peanut butter out. Ive also put pupperoni sicks inside. I break the pupperoni sticks up into smaller pieces and shove them in the center. My dog plays with the toy to get them out. We have a few of these since he loves them so much!!