PETBOOK is a community platform for pet owners, leveraging big data and machine learning to analyze pet health data from various sources. It offers personalized health advice based on factors like breed, age, and dietary habits. Users can input symptoms to receive potential causes and treatment suggestions, along with recommendations for pet food, supplements, and medical services. The AI system provides professional health answers and optimizes its knowledge base continuously. PETBOOK also fosters a vibrant community for sharing pet-raising experiences and health management insights.