We’ve all seen dogs sticking their heads out of car windows while on the road. It’s an enjoyable sight and the dogs seem to be in pure bliss. But why do they stick their heads out? It’s not because of their owner’s farts (like I assumed), it’s actually because of their highly tuned sense of smell. It creates a wonderland for them when they are being bombarded with the scents of the world. You can learn more in the video above.