Why Pooches Eat Poop

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How many of you dog owners have been a victim of this scenario? Your dog enters the room and sees you on the other side. He’s tosses his ears back, puts on a smile, wiggles his way over and gives you a big smooch. For an instant you’re overjoyed but then you realize, “That’s not normal doggie breath. Yuk. It smells like poop!”

If this has happened to you, rest assured, you’re not alone. According to a study presented at the Dr. Benjamin Hart at the 2012 ACVB/AVSAB Animal Behavior Symposium, 16% of dogs are serious stool eaters – a.k.a. copraphagia – meaning, they’ve been seen eating dog poop at least 5 times. For those of you who have lived with a cat and dog together, I’m sure the situation seems even worse—it seems like a majority of dogs will eat kitty poop eventually if they have access.

Who Eats Poop and What Types?

You might think that such a foul habit points something abnormal such as a nutritional deficiency or that it means Fido’s not getting enough to eat, but according to Hart, that’s not true.
In their survey-based study of 1548 dogs where the researchers compared poop eaters with non-poop eaters, they found that diet was not an important factor. However they did find that the size of the household was.

“The more dogs you have the more likely your dog will eat poop,” says Hart. “19% of poop eaters were in single dog homes whereas 24% lived with two dogs and 30% lived in a three-dog household.”

A second study survey looking at super poop eaters only—dogs who had been seen eating poop over 10 times, shed more light on why this trend would be so. It’s because they’re not eating their own poop that much.  “ Eighty five percent of poop-eaters ate the feces of other dogs,” states Hart. Hence more dogs, more access to feces from other Fidos. Yes, it just gets grosser.

Why is Poop-eating So Common?

You might wonder how poop-eating could become such a common pastime among dogs. It all began over 10,000 years ago when dogs started hanging out near humans so that they could scavenge off our trash. This tendency to scavenge can be seen in the present day “wild” model of the domestic dog—the village dog. While dogs in the U.S. experience the luxury of a cozy home, free meals, and regular veterinary check-ups, three quarters of the world’s dogs are feral dogs, most of whom have chosen to live in villages near people. These motley mutts make their living by preying on stolen tidbits, human leftovers, and feces of all kinds. Those tame enough to hang out close to humans and human dumpsites and those indiscriminate enough to eat anything with nutritive value survive the best.

Many of our coddled domestic dogs retain a strong desire to scavenge. They raid trash cans and left out lunch bags. Interestingly enough, Hart found that the best predictors of poop eating was whether or not the dog was a greedy eater.  Of the dogs in his study, 52% of the stool eaters stole food off tables and only 27% of non-poop eaters showed this lack of impulse control.

So if you have a greedy eater will he become a feces foodie? It depends on his access to the morsels, level of other interesting activities, and personal preference. Luckily for most owners, like humans who never develop a taste for snails, many dogs never develop a taste for poop. Even though dogs in Hart’s study were greedy, they were still picky enough to go primarily for the fresh stuff. In the study, 75% of dogs ate poop that had been around for only 24 hours and 92% only ate poop within 1-2 days.

What to Do if Your Dog Feasts on Feces

Now for the big question; what should you do if your dog likes to feast on feces? Well don’t bother with the commercial products. Hart’s survey found that of the 12 commercial anti-copraphagia food additives on the market—For-Bid, Nasty-habit, and Potty Mouth to name a few—none worked in more than 2% of dogs, and many didn’t even work at all. On the other hand, what could possibly taste worse than poop?  Even lacing with chili pepper didn’t work, nor did using an electronic collar, yelling leave-it, or trying punishment-based techniques that people tend to use. That’s most likely because the dog still has a desire and may just learn to avoid performing this nasty habit in front of you.

A more successful, but inconvenient, solution is to just deny access to the delicacy by cleaning it up ASAP. Also, instead of reactively punishing Fido, proactively call him to you before or as soon as you see him heading towards the stinky delicacy. Then reward him for coming when called and staying where you want while you go out and scoop the waste. To learn how to train come when called, please read my blog article on Teaching a Reliable Come When Called. To see the specific exercises and techniques to train your dog to focus on and respond to you quickly, try Reactive Dog Workshop 1 and 2.

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11 responses to “Why Pooches Eat Poop

  1. Great Article. I love all animals. I also monitor and treat my cats very special. I would love having a dog but I cannot because of where I live, I do have four indoor cats

    Owner CEL Financial Services

  2. We have an awful situation where humans defecate in our parks – even the parks that are specifically for dogs! I have a Bassett Hound – very lively and not trained – he is stubborn and I have been unable to train him beyond sitting; and stopping when I scream at him. He’s good on a leash, but off leash will head straight for the human and/or dog faeces, and not only eat it, but he rolls in it and smears it all over himself! He has a ‘sister’ – a boxer who is deaf, and he never eats her poop. He does raid the litter tray for cat poop though. The boxer also enjoys human faeces!!! 🙁

  3. Dogs will teach other dogs to do it– dogs that otherwise wouldn’t have done it. I have a pit bull that does it (she was locked in a closet as a puppy while the owners went to work, so I assumed she started it then). So Zora eats it, then I slowly added dogs to the pack who were not poop eaters and they watched her do it, so now three more of my dogs do it. It’s aggravating to no end. It does make you stop and enjoy nature for 15 minutes in the morning while you’re waiting to scoop. lol

  4. Sorry, don’t buy it. I feed raw diet, BARF. I can tell when certain minerals are missing and adjust it. As soon as there is a balance, there is no more horse poop eating. Just like in the garden, you adjust the soil.

    1. Please share with us how you know when certain minerals are missing. Which minerals are most commonly missing, and how do you adjust the diet? I would really like to know how to do this.

  5. Great article. I have also found the OTCs don’t work. Among the dogs we have had in our home (cocker spaniels) only the black females have been poop eaters (with the exception of one). All our buff boys have no interest. We do immediately pick up, that’s all that has worked. Interesting, that we can go on vacation for 2-1/2 months where the dogs are only walked on a leash (so no poop eating), then come home to their yard and she goes right to it without missing a beat. grin

  6. My only eats human poo, we do a lot of walking
    And climbing so from time to time people will get
    Court short , my dog will sniff it out then vomit
    Discusting ! Why why why x

  7. I have a poop eater. Dare I say, “had”? What worked is to add a tablespoon of canned pumpkin to the AM and PM feedings for all dogs in the house. (There are four.) It’s taken about four months, but I think she finally stopped going for the poop!

  8. I like to show dogs my affection but have a hard time letting them lick my face knowing they licked their butt or another dog. Can you get worms, parasites or other diseases from dogs licking you?

  9. I am wondering why adding a tablespoon of pumpkin stopped Jolynn’s dog from eating dog poop. Does anyone know?

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