While out on a walk I spotted another dog being walked far up in the distance. Spencer and Bruno had not seen it. When we got to the same place on the sidewalk that the other owner had just been walking his dog, the dog and owner were long gone. I was not even sure where they disappeared to. Spencer however smelled the dog for sure. His ears perked for a second and then his nose started smelling the air. He was looking around breathing in the scent deeply, but the pup kept heeling on the leash like a good boy. Bruno sniffed the air a little too, but was not as interested as Spence. It must be something to have a nose that can smell that well. I would not have been able to smell a person or dog from that far away that long ago even if they were wearing a heavy perfume. Goes to show how much differently dogs view the world than humans. To us humans, it is all about sight; to the dogs it is all about smell.