Dogs and wolves share all the same behaviors and body language. What differs is the intensity, frequency and amount of stimulus needed to elicit behaviors. Any of you who have more than one dog should not have any trouble figuring out who is dominant over whom. My dog pack has an observable rank order too. It is somewhat more relaxed than the typical wolf pack though.
Wolves are also much more seasonal than dogs - especially neutered dogs.
Wolves have only one breeding season in late winter. They just vary more throughout the year than dogs typically do - even intact dogs. Both dogs and wolves can howl and bark. Northern breed dogs and wolves tend to howl more than bark. I have heard some people say wolves can't bark - which is not true.