Fusion of Metaverse and Veterinary Medicine -- The Arrival of the Petaverse Era: This lecture by Professor Hyun Dae-won examines how metaverse technology is converging with veterinary medicine and pet care. Topics covered: the meeting of veterinarians and metaverse in new challenges for the profession; the necessity of a Petaverse and its potential applications for remote pet health monitoring, virtual veterinary consultations, and digital twin health tracking for companion animals; the fusion of metaverse and veterinary medicine creating new service possibilities; the Petaverse and healing of animal minds through virtual therapy and behavioral enrichment environments; the connection of One Health principles with metaverse -- One Health recognizes that human, animal, and environmental health are interconnected, and the metaverse creates new ways to address all three dimensions simultaneously.