This project aims to help pet owners monitor their cat’s physical changes and health conditions. Based on the idea of "Internet of Things" (IOT), the project mainly focuses on devices that collect data from three items - Bowl, Litter Box, and Water container.Our devices collect data each day and combine them into a general data feed, in order to monitor of any little changes of the cat’s health condition. Data is show in a mobile application. It helps pet owners to monitory, compare, and understand their cats' status which helps to reduce the health risk.