Dogs also figured this out, and it goes both ways. This is why they stare at you when they're going, especially when they're puppies.
Since I can remember I wonder why dogs do that but it had never occurred to me that that was the reason. What the hell. How many other _obvious_ things I've been blind my whole life
Hey, I only learned this a few years ago myself when I was reading a book about my dog's breed! And I realize I wasn't super specific (although probably obvious) that they stare at you while they go to make sure you are on the lookout.