Automatic cat and dog feeder*1, water dispenser* 1. Food feeder and waterer set suitable for small and medium dogs or cats. The cat feeder uses gravity to automatically supply water and food. No electricity is required. This automatic cat feeder is made of natural non-toxic and environment-friendly materials, which will not have any impact on the health of pets. You can use it with confidence without worrying about its impact on your pet's health.