My 5 months Rottweiler suffered a dog attack and is bitten on thigh by one dog from behind. Its been few days now he is healed. Since then he is scared of stray dogs as they attack him. He has got in to a phobia, should i no more how to take him out as of now as he needs to forget the incident with time or from when will I again can take him out. please suggest me what to do. He is a timid but playful dog.