If you’ve ever taken a dog on a walk, or let them run around the woods, you know that they LOVE to roll around in stinky stuff! And it’s one heck of a mess to clean up. Why do they do that? We asked researcher Elizabeth Carranza from the Arizona Canine Cognition Center to help us find the answer.

Got a question that’s rolling around in your brain? Send it to us at BrainsOn.org/contact, and we’ll help sniff out the answer.