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Grey Dog Poop and What It Means for Your Pet’s Health

grey dog poop
Vet Approved

This information is up to date and writtenin accordance with the latest veterinary research.

Have you ever taken your four-legged companion for a walk, only to find their poop taking on an unexpected shade of grey? 

It can be quite puzzling and even alarming for pet owners, and it’s an issue that I face commonly as a veterinarian. 

But fear not! In this comprehensive guide, we are going to delve into the world of grey dog poop and uncover the reasons behind this unusual color change. 

From potential causes to actionable steps you can take, we’ll guide you through the fascinating world of grey dog poop and shed light on what it means for your adorable four-legged friend. 

Why does my dog have grey poop?

Grey poop in dogs can be a sign of various underlying issues related to digestion. Generally grey poop indicates that certain elements of your dog’s diet, particularly fats, haven’t been digested properly. This can be for various reasons, including pancreatitis, exocrine pancreatic insufficiency and bile duct issues. 

Let’s look at the causes of grey dog poop in more detail:


Inflammation or infection of the pancreas, known as Pancreatitis, is one potential cause of grey poop in dogs. 

The pancreas is an organ that is involved in the production of digestive enzymes essential for the proper breakdown of food, particularly fat in the diet. If this organ becomes inflamed or damaged, the production of these enzymes is disrupted resulting in inefficient digestion of food. Undigested food and fats in the diet then pass into your dog’s poop, resulting in a change in color.

If your dog shows signs such as vomiting, loss of appetite, or abdominal pain along with grey poop, Pancreatitis might be at play. In such cases, it’s important not to delay seeking veterinary care since early intervention makes a significant difference in treatment outcome. 

Exocrine Pancreatic Insufficiency (EPI)

Another potential cause of grey dog poop is Exocrine Pancreatic Insufficiency (EPI). This condition occurs when the pancreas fails to generate enough enzymes for food digestion, resulting in malabsorption and potentially greying stools among other symptoms. EPI can occur as a result of pancreatitis, but it can also be a genetic or inherited condition. 

Dogs suffering from EPI often experience weight loss despite maintaining normal or even increased appetite due to their body’s inability to effectively absorb nutrients from the food they eat. 

Bile Duct Issues

A third possible explanation involves complications with bile duct function. Bile is a substance produced by the liver, that is released from the gall bladder to aid with fat digestion. Bile also gives feces its characteristic brown color.

If there is an obstruction or dysfunction with the bile ducts, such as gallstones or liver disease, then bile cannot properly reach the intestines. This can lead to gray-colored stools due to the lack of usual pigmentation derived from bile.

When Should I Take My Dog to the Vet if They Have Grey Dog Poop?

Paying attention to your pup’s poop is essential for their health and well-being. Fecal color can be an indication of potential issues with your pet’s liver, pancreas, or gallbladder, so it’s important to pay attention.

If you find yourself facing this situation of grey stools from your canine companion, you’ll probably be asking yourself the question ‘Should I wait and see if it clears up? Or should I seek immediate medical help?’ 

Well, there can be reasons to do both. Let’s explore the situations where you should take your dog to the vet for their grey poop:

Persistent Grey Poop

Persistent grayish stools are not something that one should ignore. While it can be okay to wait and see if your dog’s grey poop resolves itself in the first 24-48hours, if the issue persists for more than 2 days then you should take them to see the vet. 

If Your Dog Has Other Symptoms

Apart from noticing the pale-colored feces itself – watch out for other signs too. Unexplained weight loss, difficulty defecating, abdominal discomfort, yellowish eyes or skin or vomiting are all symptoms that should not be sat on. All of these could potentially signal internal problems requiring urgent care.

Is Grey Dog Poop an Emergency?

A grey or light-colored stool could potentially signal underlying digestive issues, but does that mean it’s an emergency? The answer isn’t quite black and white.

If your dog is still bright and not showing any other symptoms, then the situation doesn’t necessarily warrant immediate veterinary intervention – but you should still take your dog to the vet if their grey poop persists for more than 2 days. 

However, if your dog is seriously unwell in themself or is showing any other symptoms such as blood in their stool, extreme lethargy, vomiting or abdominal pain, then you should take them to the vet immediately. Conditions such as pancreatitis and bile duct issues have a better outcome if treated promptly. 

What’s Causing My Dog’s Grey Poop?

To determine the underlying cause of your dog’s gray feces, a comprehensive investigation should be carried out by a veterinarian. This approach ensures that an accurate diagnosis is made and therefore the appropriate treatment started.

When presented with a dog experiencing grey poop, veterinarians follow a systematic approach to diagnose the underlying cause. The first step is to conduct a thorough physical examination, assessing the dog’s overall health and looking for any accompanying symptoms. Vets may also request a detailed history from the owner, including information on diet, recent changes, medications, and any other relevant factors. 

Diagnostic tests play a crucial role in identifying the cause of grey poop. These may include blood tests to check liver and pancreas function, fecal analysis to rule out parasites or infections, and imaging techniques such as ultrasound or X-rays to evaluate the gall bladder and surrounding organs. In some cases, more advanced procedures like an endoscopy or biopsy may be required

How To Treat Grey Dog Poop

Treating your dog’s grey poop depends on the underlying cause; it could signal health problems like pancreatitis, exocrine pancreatic insufficiency (EPI) or gall bladder issues and dealing with these issues often requires diet alterations and specific medications.

Pancreatitis – Adjusting Your Pet’s Diet

The role of dietary modifications in managing pancreatitis cannot be overstated. High-fat food consumption can be a contributing factor to inflammation of the pancreas, making dietary modifications imperative. Hence, lowering fat intake becomes crucial.

If your dog is susceptible to pancreatitis, I’d recommend feeding a diet with no more than 15% fat on a dry matter basis. You can check how much fat content is in your dog’s current food by looking at the ingredients and nutritional information on the back of their dog food packaging. 

Treating EPI

EPI arises when the pancreas fails to produce enough of the enzymes needed for digestion, resulting not only in poor nutrient absorption but also stool discoloration – often to a greyish tone. 

In these cases, these essential enzymes must be added to your dog’s diet. Pancreatic enzyme supplements fill in for missing digestive enzymes, thus enabling dogs suffering from EPI to better digest their food. These enzymes come in various forms, including powders, tablets, capsules, and even chewables designed specifically for easy administration.

Treating Gall Bladder Issues

Depending on the severity and underlying cause of gall bladder issues, treatment options may include dietary changes, medication, and sometimes surgical intervention. 

A low-fat diet is often recommended to reduce the workload on the gall bladder and prevent further complications. Medications such as bile acid modifiers or antibiotics may be prescribed to manage inflammation or infection and in more severe cases, surgical removal of the gall bladder might be necessary.


Why is my dog pooping grey?

Grey poop in dogs often indicates a problem with the liver or pancreas, such as exocrine pancreatic insufficiency or bile duct obstruction. A vet visit is recommended.

Why is my dog’s poop grey and green?

A grey-green stool can occur if your dog is suffering from EPI, pancreatitis or gall bladder issues and they eat grass or other plant material. However, there are many other causes of green poop so be sure to see your vet if the problem persists. 

Why is my dog’s poop clay colored?

A clay-colored stool could suggest pancreatic disease such as pancreatitis or EPI, or that your dog isn’t producing enough bile. This could signal a liver condition and should prompt a trip to the vet for proper diagnosis and treatment.

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