Excellent entertainment
This is a great toy/feeder.
I use it for my 15 month old Labrador to slow her down with her eating.
The idea is that you put say 1/2 their meal in to the kong then the dog gas to push it around in order for the food to tip out.
This is made harder for the dog, as the base of the kong is weighted so it constantly corrects itself to its upright position.
How my dog doesn't get dizzy I don't know, but she really loves it, and is one of the best things I have bought.