I have drawn down on a running dog in a park before. So far every charging, or appearing to charge, dog has responded to the solid, aggressive stance and the loud "no, stop" command. However, if you think a person can cover ten feet in a hurry, that is nothing compared to an animal. Once a dog is on you is no time to try and draw. They break my "circle of safety" or get into "my space" the gun is out and ready.