How to use it, how to pack snacks: When using it for first time: First step: Put crushed dry food or snacks into ball (just put it in small yellow hole)Step 2: Demonstrate movement of food falling from rolling ball to pet Once pet knows that food will fall from rolling ball, it will become interested Step 3: Fill ball with a large piece of food (because leaking ball has a larger hole, snacks are easier to fall out )Tips for loading snacks: If snacks are plugged well, you can play for a longer time (The size should be appropriate, not too small, so that dog can easily eat it, and not too big If you squeeze it inside, dog can't eat it no matter how hard it is )If it doesnt work, you can put some snacks into it first, and save food You can expose snacks to outside of ball rich fragrance tempts dog After tasting sweetness, it will concentrate on snacks in ball Dig it out Dogs also need a sense of accomplishmentIt is relatively large and suitable for large dogs such as gold Retriever and Alaska It can consume their excessive physical strength to reduce their destructive power to other things~Product name: trumpet strange ball, leaking ballSpecification: Small 8cmApplicable pe