캣도그 is a free iPhone app developed by Seonggon Sim under the Lifestyle category. It aims to discourage buying and promote adopting pets, specifically focusing on stray animals. The app is a part of the Animal Protection Management System by the Ministry of Agriculture, Food and Rural Affairs, offering real-time access to information on abandoned animals nationwide. Users can search based on location, time frame, and neutering status, providing detailed profiles of stray animals and adoption procedures.

캣도그 not only caters to dog and cat lovers but also extends its services to various other animal species like rabbits, parrots, and meerkats. With features such as real-time updates from shelters and detailed pet profiles, the app serves as a comprehensive platform for individuals looking to adopt or reunite with lost pets.