This is how I get fearful dogs used to going in and out of doorways. Fearful dogs may not want to come inside. Doorways are confined areas and fearful dogs may not feel comfortable going through them if the door area is crowded. Here is how to help your dog get used to doorways. Tip use a leash or long line to help your dog until the dog is going in and out easily without you needing to touch the leash. Practice going through the doorway often.