The Border Collie might just be the smartest dog on four legs — and also the most judgmental about your couch placement. If you've ever lived with one, you know the drill: those piercing, intelligent eyes track every move you make, they herd your guests into the kitchen, and they somehow always know when it's 4:59 PM (a.k.a. dinner time). So when it comes to the best Border Collie wall...