The concept of this toy is you unscrew the bottom of the toy, place the food inside and your pet will have to "figure out" how to get the food out. All he has to do is pull on the rope and the food is suppose to come out. But since it is a bottle, it'll end up rolling around. It's suppose to keep your dog mentally stimulated. Just so happens, Roscoe is a genius and figured out that if you put it on a bed, it won't roll around as much and he'll get the food out faster. The first night we gave it him, he got so tired he fell asleep in front of it. These toys come in different sizes, they're pretty sturdy and it's a creative way to keep your little/or big one entertained.