This behavior is usually harmless, but we break down exactly why dogs like to lick people if it's safe for them to do so, and how to train your dog to lick less if it's becoming an annoyance. If your dog loves to lick you, it's for a few reasons, they're very affectionate, looking for your attention, or acting on their wild instinct. Dog owners usually call it giving kisses and consider it a sign of affection.