SnackSpin gives that brain a job.
Smear in peanut butter, yogurt, or wet food. Set it down. As he licks, the bowl spins, so he has to chase it, work it, and think his way to every last bite.
Licking is naturally self-soothing for dogs. Puzzle-solving burns mental energy. Put them together and you get the combination most toys miss.
What can I put in it?