Why Do Dogs Roll in Poop and Dead Animals? The Science Behind the Stink

Among the uncanny behaviors we can witness our dogs do, rolling in poop or (gasp!) dead animals is probably one of the top in the list. So if you've ever wondered - “Why do dogs roll in poop?” or “Why do dogs roll in dead animals?”, you're not alone.

Stink aside, it’s interesting to note that when dogs roll in objects or surfaces that smell funky, it appears to be connected to how they experience and make use of scents. According to scientists, the behavior may be due to factors such as: a dog’s instinct, investigation, and means of communication, among other possible reasons.

Content:

1. Why Do Dogs Roll in Poop? The Real Reasons Behind This Icky Instinct
2. Why Do Dogs Roll in Dead Animals & Other Stinky Things?
3. Does It Matter What Kind of Poop? Cat, Bird, Deer, Cow & More
4. How to Stop (or Manage) Your Dog's Rolling Habit
5. Conclusion

Why Do Dogs Roll in Poop? The Real Reasons Behind This Icky Instinct

To understand why dogs roll around in poop, a good way to start is by analyzing their sense of smell. Because dogs are highly olfactory animals, smell is one of their primary ways to gather information about the world around them. In fact, studies show that dogs can distinguish individuals through odor and use scent as part of social communication. Feces, for instance, is more than just “waste” in a dog’s perspective. For them, it contains a mix of things such as chemical information about the animal involved, what they’ve eaten, and potentially, even their physiological state. Dogs routinely investigate such odors with their noses, so rolling may be an extension of that interest.

Social Communication

One possibility why dogs roll in poop is communication through scent. Dogs can release their own odors through urine, feces, glands, and other body surfaces. Rolling may similarly transfer an odor onto the dog's coat, potentially changing the scent it carries. Scientists have proposed that this could communicate information to other animals, although the message they want to convey remains uncertain.

Scent Camouflage

Another possible reason is scent camouflage. Researchers have suggested that wild animals may cover their natural odor with strong scents from the environment to mask themselves from predators.

Preference

Meanwhile, it’s also possible that your dog simply likes the smell. A 2024 study of captive wolves, for instance, found that unfamiliar odors could trigger scent rolling, with deer and mouflon feces among the odors that attracted interest. The researchers concluded that unfamiliar scents appeared to be an important trigger, while emphasizing that the ultimate function of scent rolling remains unknown.

Why Do Dogs Roll in Dead Animals & Other Stinky Things?

So, why do dogs roll in dead animals? For much the same reason they may roll in poop: because the odor of decomposition contains a multitude of information. A carcass contains hundreds of volatile compounds generated as tissues break down. While humans may turn away, the biological information can be intriguing for dogs. Dogs' exceptional olfactory abilities are well documented, and their noses are capable of detecting and discriminating odors at concentrations far below human perception. Rolling may also be sensory enrichment. Dogs naturally investigate the environment through smell, and an unusual odor can provide intense stimulation.

In the 2024 wolf study, different odors produced different responses: some triggered prolonged investigation or rolling, while others produced little response. It's tempting to say dogs roll in dead things because their ancestors wanted to disguise their scent while hunting. And while that explanation seems plausible, scientists still don't know exactly why scent rolling evolved or what information the odor communicates.

Does It Matter What Kind of Poop? Cat, Bird, Deer, Cow & More

You may notice that your dog having preferences. One dog, for instance, may ignore dog poop but go gaga over deer droppings while another may be drawn to rabbit poop.

There is no scientific explanation saying that dogs universally prefer one type of animal feces. However, different animals produce different chemical odors, and dogs can discriminate among odors with remarkable sensitivity. Research into canine olfaction shows that dogs can identify and distinguish highly subtle scent differences, which helps explain why one type of poop may be more interesting than another.

However, feces - whether it be from dogs, cats, or other wildlife animals - can contain bacteria or viruses, and possibly parasites. To prevent contamination and illnesses from spreading, The CDC recommends picking up pet feces quickly, avoiding unnecessary contact with animal waste, and washing hands after handling poop.

Preventing access to animal feces makes sense too, particularly when the source is unknown, the feces are fresh, or the animal may be carrying parasites or infectious organisms.

How to Stop (or Manage) Your Dog's Rolling Habit

It may be difficult to stop our dog’s behavior when the behavior is driven by instinct and intense sensory interest. However, there are ways to redirect their behavior with management and reward-based training.

Prevention

A way to start is by preventing certain opportunities. On walks, scan the path ahead for carcasses or feces, particularly in parks, wooded areas, fields, and places frequented by wildlife. Keep your dog close enough so that you can intervene before they reach the target.

Teaching Cues & Rewards

Teach a reliable “leave it” cue at home first, then reward your dog for turning away from something interesting. Gradually, practice outdoors around increasingly distracting smells. Reward-based training is recommended by the American Veterinary Society of Animal Behavior because it can modify unwanted behavior without relying on fear, pain, or intimidation.

Sniffing Opportunities

It's also useful to provide appropriate opportunities for sniffing. Letting your dog investigate safe smells on walks can satisfy part of the natural behavior you're trying to manage. The goal isn't to eliminate your dog's interest in scent. Rather, it's to teach your dog which smells are okay to investigate and which are off-limits.

A useful discussion is this recent r/dogs thread on Reddit where owners describe dogs rolling in poop and dead animals, including one commenter recommending “leave it” and “watch me” cues, as well as proactive supervision.

For dogs that repeatedly roll in poop outside, a camera such as the Petcube Cam can also help identify when and where the behavior happens. The Petcube App allows parents to closely monitor pets, wherever they may be. With the app, you get access to useful features such as receiving alerts, having access to video footage, consulting with certified online vets for advice, among many others.

If the behavior suddenly becomes much more frequent, is accompanied by excessive licking, itching, changes in appetite or stool, or if it involves eating feces, it’s best to consult with your veterinarian. A professional can help rule out medical or behavioral factors and recommend an appropriate way to address the issue.

Conclusion

So, why do dogs roll in poop and dead animals? There’s no one definitive answer. Strong odors may offer dogs valuable sensory information, stimulate their olfactory system, and possibly play a role in scent communication. Scent camouflage is another interesting possibility, but it remains unproven.

You may never convince your dog that they smell stinky. But with supervision, environmental management, and reward-based training, you can help stop the behavior of rolling in poop and dead animals.