Dogs and cats have been adversaries since ancient times, but they can also become great friends. The key to successful cohabitation is early socialization, which helps create positive associations between the two species. If you introduce cats and dogs to each other during their first few months of life, they can learn to coexist peacefully. With patience and consistency, you can teach them to be tolerant and even affectionate. Through positive reinforcement and careful supervision, cats and dogs can learn to get along, making great companions for one another.