Dreaming of a bark means unexpected shouts and confrontation. Be aware that you may be the one seen as barking at your peers, and see if you can tone it down for the benefit of your future self. Civilized conversations are preferred over barking, because two people barking at each other accomplishes nothing except bruised egos.
Barking in a dream represents conflicting feelings, seeking resolution and meaning. It may be a sign of trouble within the family or home situation. It can also mean an unsettled situation in your life or at work and needing to take control to resolve it.