Good door manners are very important for a dog’s safety. A dog that can show restraint and impulse control at a door is less liable to make a mad – towards a busy road or the other dangers of getting out the front door. It gives you control over that space and decreases the amount of arousal that can happen when somebody knocks on your door or enters her home. "Wait" essentially means don’t cross the line, or hold on. This is not a stay, and technically the dog may move backward or sideways, but he is not to move forward.