DEAR DIDI: My dog runs out the door when I answer it. How do I keep him from doing this? -Doggy Mommy in MantecaDEAR DOGGY MOMMY: “Door Dashing” is a very serious behavior and I am glad you are addressing the issue. Hundreds of thousands of dogs each year get lost, hit by cars or are captured and kept by strangers each year when they race out the front door or side gates.