There's quite a few toys out there designed to smear some sort of substance puppies love onto a treat. Cheese spread, peanut butter, or their own blend of who knows what in a can, lol. This bone was a Kong item that you're supposed to shove treats in so the dog has to work to get them out, but my girl figured out all she has to do is crunch the treats and they fall right out. We ended up spreading the peanut butter into the holes so it would last her longer than 45 seconds :D

It's a dangerous treat, though. You won't be able to open a peanut butter jar within a mile of your dog without them hearing it and coming running as fast as they can.