My dog likes to lick me a lot, especially when I'm sitting on the couch watching TV or just after a shower. Sometimes it feels like he's giving me a bath. Answer Dogs lick for a lot of reasons. Puppies lick to solicit solid food from their mothers when they're weaned, so a young dog may lick to request its dinner.
Some dogs lick as a substitute for puppy mouthing behavior.
They've been trained not to put their teeth on people, so they lick to occupy their mouths. Licking may be a sign of affection, your dog's way of showing you that he's enjoying spending time cuddled on the couch with you. Though it's usually harmless, licking can be a problem if carried to an extreme. Sometimes dogs can lick compulsively or as a response to stress or boredom. Obsessive dogs that lick themselves non-stop can lick their fur off and even injure their skin.