Dogs lick for several reasons:
1. Affection: Licking is often a sign of love and affection. Dogs show their bond with you through this behavior.
2. Communication: Licking can be a way for dogs to communicate, either to show submission or to get your attention.
3. Taste: Dogs are curious creatures, and they may lick you because they like the taste of your skin, especially if you have sweat or food residue.
4. Exploration: Licking is part of how dogs explore their environment, much like how puppies lick their mother in early development.
5. Comfort: Licking can be soothing for dogs, both for themselves and for you. It can be a self-soothing behavior in stressful situations.
6.Grooming: Dogs often lick themselves and others as part of grooming behavior, helping to keep clean.
Overall, it's usually a natural instinct related to their social behavior and well-being.