Buzz
Humans usually don’t engage in elaborate pre-poop routines. Most just check for their phone, lock the door, and take care of business. But dogs have this curious habit of spinning around in circles before they poop.
What’s the reason for this? Is there a deeper explanation behind it, or is it simply the canine version of shaking a ketchup bottle?
Over the years, many theories have been proposed. Some believed it was a way of flattening the grass to make the spot more comfortable and less likely to spike their behinds. Others thought it was a safety measure—a quick check for predators before settling down in a vulnerable position.
However, a 2013 study published in the journal Frontiers in Zoology suggests that there’s more going on with this behavior. The paper posits that a dog’s pre-poop spins might be linked to their attempt to align themselves with the Earth’s magnetic field. Much like how birds use magnetoreception for migration, dogs might be using the magnetic poles to help plan their perfect poop spot.
Zoologist Hynek Burda and his team spent two years observing dogs in action, studying 1,893 poops and tracking the dogs’ orientation. During the 20 percent of daylight hours when the Earth’s magnetic field is stable, dogs align themselves to face either true north or south while they relieve themselves. When the magnetic field is unstable, and they can’t detect the poles, they’ll spin around a bit before choosing any direction.
Why do they do this? Burda suggests that this alignment may help dogs remember the spot, which is crucial for marking their territory.
