Dogs who are best friends often play together. They may chase each other, wrestle, or play fetch.
Dogs who are best friends often cuddle together. They may sleep next to each other or groom each other.
Dogs who are best friends often protect each other. They may bark at strangers or other dogs who approach their friend.
Dogs who are best friends may become lonely when they are apart. They may whine or pace when their friend is not around.
Dogs who are best friends often show affection towards each other. They may lick each other's faces, wag their tails, or nuzzle each other.
Dogs who are best friends often bond over similar interests. They may both enjoy playing fetch, going for walks, or chasing squirrels.
Dogs who are best friends often groom each other. This helps to keep their fur clean and free of mats.