Licking in particular can be a confusing behaviour for owners to understand — and control. Learning why dogs lick can help you get a different perspective on your pet and give you a better starting point for limiting problematic licking.
Perhaps one of the most enjoyable things about having a dog is getting to pet them, and most dogs love this too. Why do dogs like being petted? The simple answer is because it feels good and they can tell you're happy with them at that moment.