Is it for Izzy or for me?

I found this dog toy on one of my trips to the South Salem Pet Store.  It looked like a good way to entertain humans and Izzy with little effort.  (Oh, how horrible that looks in print!)
All we do is add a couple carrot chunks or smear the insides with peanut butter and watch the determined dog use all possible methods to get as much deliciousness out of the rubber mouth as possible. 
Sometimes puppies can seem truly focused.  Really.