Sniff

Always amazed with my clever hound's formidable smell powers, how clearly supercharged compared to my own limited sense. Dogs smell around corners, thru walls, three football fields away, and buried a foot down. Dogs rule their world by nose. The evolved sense must have also been life-saving for earliest humans to this oldest critter-friend, detecting both distant food and potential foes. Smell survival, maybe the difference deferring our own extinction. Would humans even be here if not for our canine allies?