TIME animals

Why Do Dogs Sniff Each Other’s Butts? Here Comes the Science

An explainer from the American Chemical Society

You know when you see an otherwise cute and perfect dog with his nose just straight up buried in another dog’s behind, and you’re just like, seriously, dude, why?

This new video from the American Chemical Society explains the science behind this seemingly peculiar behavior — and why the smell doesn’t overwhelm them.

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