If you want a fun way to feed, reward, or just entertain your dog, I highly recommend the IQ Treat Ball by Smarter Toys. Cooper has so much fun chasing the ball around as it slowly releases bits of food and when there are just a few pieces left, it's extra challenging for him to nudge and drop the ball to get the prize!
I must admit, some of the reviews are spot on in that the interior disk that is supposed to significantly slow the release of food actually came out the first time we used the ball and Cooper chewed it up. From now on, I make sure the two halves are secure and I always supervise him while he plays. It can be a bit noisy, too. I would recommend that you don't bring it out around guests unless you have wall-to-wall carpet ;)
Check it out on Amazon! IQ Treat Ball