How to Get Rid of Your Dog's Window Barking There are methods to rid of your dog's the habit of barking at windows. It'll require patience and time, but it is possible. This happens most often when a puppy sees a dog and becomes excited, but then becomes stuck behind the glass door. This is known as barrier frustration and can cause other negative behaviors , https://www.ioram.co.uk/the-history-of-double-glazing-barking-in-10-milestones/