This fascinating video, and the accompanying article on CNET, reveal some fascinating facts about the ways that our best friends experience the world through smells:
For example, dogs have stereo smelling, which means each nostril smells independently so pooches get a sense both of what a particular smell is and where it’s coming from. Dogs breathe in one hole in the nose and and out of another, so they’re always bringing in olfactory information that gets sorted by hundreds of millions of olfactory sensors. Those sensors send tons of information to the olfactory bulb, which, relatively, is much larger in the dog’s brain than in a human’s.
It’s amazing how their whole olfactory system was designed to work so well.