I'm wondering if you could tell me why-- when I'm walking Yogi through some grass-- that he smells something and the next thing I know, he's stuck his head on the ground and starts to roll his body over the area he was smelling. On two occasions, he coated himself in another dog's poop. I've been asking vets and laypersons to explain this behaviour but no one seem to know. Thank you so much for listening.

Very Sincerely,
-Robin

Dear Robin:

This is a hold-over instinct from before dogs were domesticated. They would roll around in a heavily scented object to mask their own scent, when hunting.

This behaviour can be stopped by telling your dog,