Licking the Kong and staying occupied is the goal, I think. I've heard of people freezing yogurt in them, as well as filling them with peanut butter, milkbones, etc. I have always used them to distract my girls for a while. That stuffing doesn't last long though!!

They have no interest in the Kong if it isn't stuffed with something though, so needless to say, they haven't had a Kong in quite a while since they are D-I-E-T-I-N-G. Shhhhhhhhhhhhhhh.

Logan