For a pup like mine who's always been somewhat the rocket scientist and has mastered every puzzle toy out there in a matter of minutes regardless of the "skill level" ratings, the various treat pocket toys in this line are downright fabulous. He's a 25lb model, so they hold 2-3 of his standard bite-size treats, but they do require a good bit of effort for him to unwedge them from their hidden pocket. He's entertained for 3-5 minutes, and it slows him down do he's not gobbling one treat after another as he would otherwise do. I stumbled upon the orange monster one in a retail store around Halloween, and have been on the hunt for a replacement elsewhere since he shredded the treat pocket for the one we got in October -- the rest of the toy is otherwise still in pretty good shape, but it's the treat discovery part that motivates my little guy. Really happy I did a web search for "orange monster treat dog toy" and found all the varieties here. Buying them all! Awesome product! Please keep making them.