Product Information: Smarter Toys  =  Smarter Dogs! In nature, dogs have to forage for their food.  The IQ Treat Ball allows dogs to work for their food and, in the process, gain healthy mental and physical stimulation.  Essentially, the toys allow dogs to be dogs, feeding their instincts. The IQ Treat Ball features an insert that allows you to adjust the difficulty, determining how hard your dog has to work to get treats out of the ball!