Hi, dogs bites are specific injuries because we always expect infection; these wounds are highly contaminated. There is no reason to panic. You should find out is this dog healthy and vaccinated,if not, go to hospital.
Dogs bites wounds are NEVER sutured.
What should you do? clean wound using soap and water and some kind of antiseptic, put a sterile packing on it. After 24 hours, the packing should be removed and the wound reexamined for signs of infection( pain, heat, redness
, swelling). if you notice these signs, go to hospital...
Dr. Ivan Romich, wish you good health