Playing aids dogs in developing life skills regarding their body movement, food acquisition, and defending themselves. When dogs play, they chase each other and bark. If your dog is always in a playful mood, it might be due to the fact that it does not get enough time to play with others or even with you. If your dog does have the chance to get some play time, it will try to maximize play time with you.
Additionally, your pup might want some more attention because it wants to spend more time with you. Try to spend more time with your furry friend.