I bought this toy yesterday at PetSmart to help keep Kentucky occupied in the apartment.
You put treats in one hole and, if the dog rolls is around, they will randomly fall out.
She caught on really quick after I rolled it across the floor for her and the treats fell out. It was really cute to watch her rolling it around all over the apartment. When she ran into a wall or the couch, she would pick it up and move it back to the middle of the floor and start rolling it again. It has big "craters" that make it easy for bigger dogs to pick up.
However, it is made of a soft rubber/plastic material so when I stopped watching her for a couple minutes, she managed to chew her own hole in the toy to try to get to the treats quicker.
She's just like her mama - I, too, am an instant-gratification kind of gal.
They had a hard plastic cube that worked the same way. I think I'm going to get that one tonight instead. Maybe it will last longer.
Here's a picture of the toy from the petsmart site. When I get home, I'll post a pic of 'Tucky's "modified" version.