A companion animal is a pet that provides emotional support and companionship to humans. Common examples include dogs, cats, rabbits, and birds. These animals often live in homes and are cared for by their owners, forming strong bonds that enhance the well-being of both the pet and the person. Companion animals can help reduce feelings of loneliness and stress, making them valuable for mental health. They require regular care, including feeding, grooming, and exercise, and their presence can encourage physical activity and social interaction among their owners.