Why Do Dogs Eat Poop?

A Tasteful Discussion

Like any companion or roommate, dogs — for all their love and cuteness—have habits we just don’t understand. One question dog owners often ask their pets: “Why? Why would you eat poop?”

When we polled* dog owners recently, most thought it was because a dog is lacking nutrients (49%), they’re anxious (43%) or they just think it tastes good (40%).

Dogs are significantly more likely to eat the droppings of another species (e.g., horses, rabbits) than their own.

But Why? Whyyyyy?

We held our noses and got to the bottom of the issue with the help of some experts.

Do Dogs Eat Poop Because They Lack Nutrients?

While those in our poll thought this was the number-one reason for the behavior, it has actually never been proven. “It’s a myth dogs eat poop because they’re seeking nutrients they aren’t getting. There’s no evidence to back this,” says 
Dr. Jo Gale, BVetMed CertLAS MRCVS, (opens in new window)  Senior Manager, Global Science Advocacy at Waltham Petcare Science Institute.

Do Dogs Eat Poop Because They're Anxious?

According to 
Dr. Tammie King (opens in new window) , Applied Behavior Technical Leader at Waltham Petcare Science Institute, “It can occur where there is lack of environmental enrichment. You see this often in dogs who are kenneled and have a lack of opportunity to exhibit normal canine behavior.” So if you need another excuse to get out and play with your pooch, this is a good one.

Do Dogs Eat Poop Because of the Taste?

Believe it or not, this is the main reason dogs eat poop. Dr. Jo Gale explains: “Dogs are scavengers by nature and use any opportunity to eat what they can, when they can. They consider it a ‘tasty snack.’” Dr. Tammie King adds that “[Dogs eating poop] is a learned behavior. They’ve done it, enjoyed it, and that behavior is repeated.”

We love our dogs so much that we’re willing to trust our best friends on this. Maybe we should come out with a line of doggie breath mints though. Hmm.

Is Eating Poop Harmful to Dogs?

“Ingesting feces from any animal increases potential for ingesting parasites and pathogens,” cautions Dr. James Serpell BSc, Phd (opens in new window)  Professor of Humane Ethics & Animal Welfare at University of Pennsylvania School of Veterinary Medicine. He went on to say, “[It’s] not something humans should ignore, but it's not worth getting too excited about it.”

All the experts we consulted said that if your dog occasionally eats poop, it’s nothing to be overly alarmed by. Just keep an eye on the frequency and their overall health. And as always, make sure they’re getting a nutritious diet and plenty of exercise and attention. If you have any concerns contact your vet.

Despite dogs liking the taste of poop, we’re going to stick with the healthy range of more traditional flavors offered in all IAMS dog foods (opens in new window) .

*Surveyed U.S. dog owners, age 18+
Sample Size: n=201
Fielded May 8 to May 10, 2020