The dog threw the tennis ball into the hole at the top, and when the tennis ball was falling, it hit the switch and the snacks escaped (about 0-8 pieces escaped at a time on one side) Material: ABS plastic material, fine surface, odorless Flat feeding plate: used to store leaky snacks, the dog can play while eating Standard product: leaky food container (1) plastic spoon (1) tennis ball (2) color: gray