* Licking can be a sign of affection. Dogs often lick the people they love as a way to show their affection. When your dog licks you, it is likely trying to tell you that it loves you.
* Licking can be a way for your dog to explore its surroundings. Dogs have a lot of taste buds on their tongues, which they use to explore their surroundings. When your dog licks you, it may be trying to learn more about you or its environment.
* Licking can also be a way for your dog to groom you. Dogs often lick themselves to clean themselves. When they lick you, they may be trying to groom you as a way to show their affection.