It is great for small to medium sized pets. The circulation system helps provide healthy and hygienic water for beloved pets all day.1.[2 PackS Automatic Cat Feeders and Cat Water Dispenser in Set]--Buy 1 get 2 pieces pet feeder set,1 cat food dispenser&dog feeder + 1 cat water dispenser&dog water bowl dispenser.2.[Gravity Feeder Automatic Supply]--This automatic dog feeder adopt natural gravity supply system, no electricity required, Eco-friendly automatic cat feeder and can be used anywhere.best choice if you need to go to work or travel, do not need to worry about your pets being hungry.3.[Big Capacity Dog Water Bowl Dispenser and Automatic Dog Feeder]--3.5 L dog water bowl and dog food bowls,can last about 7 days for small kitten, 3 days for big dogs.4.[Update Detachable and Non-slip Cat Feeder Base]--Different from other cat feeder, our cat feeder base is detachable,easy to clean and Prevent water stains,and enlarged black anti-slop rubber feet effectively prevent the dog water bowl dispenser and dog food bowls from overturning,your cats and dogs can safety enjoy their food and water.