Safety Material: Made of high quality ABS and PC material, the surface is smooth and durable, you can easily unscrew the top cover to clean and add food. No need for electric propulsion: animals move on their own when touched lightly. The toy adopts own weight balancing system, no matter how much it will not be knocked over by the animal Innovative Design: The feeder is designed with 2 leakage holes to control the feed rate of leakage.The toy will leak from snacks during the swinging process, which increase the fun of the toy, and delay feeding the animal can also protect the gastrointestinal health of the animal Easy to use and clean: just twist to open the top cover, then put snacks in it, squeeze and lock. Rinse with clean water and air dry after each use. Relieve worries: applicable to all cats and dogs. Playing with this toy can often relieve the animal’s anxiety and improve IQ. If you have any suggestions, we are happy to know. We will get back to you within 24 hours.