NACOCO Dog Leakaging Food Ball Intelligence Dog Toys Ball The Dog Chew Toys Suitable for teddy, poodle, than bear dog,the Pomeranian and other small dogs. Leakaging food is not depend on extrusion and battery, mainly by air convection and magnetic voice. It is good for the puppy developing intelligence. There is a special acoustic generator, as the shaking of the sphere, emits an irregular "pet monogatari". There is a leakage feed bin, we can put small snacks in the feed bin, eating while playing.