Login Sign in
Login Sign in

Join thousands of pet parents and get vet-approved guidance, product reviews, exclusive deals, and more!

Dog head tilted yellow background
Skip To

We can all agree: No one likes picking up dog poop. It smells, and if you’re not careful, it can also be messy. However, when you reach down one day to find yellow dog poop instead of your pup’s regular brown stool, this unpleasant chore might also suddenly feel like a cause for concern. 

Monitoring your dog’s stool is one of the best things you can do to monitor their wellness. Changes to dog poop—whether it’s the color, consistency, coating, or contents—may indicate a change in your dog’s health.

Why is your dog’s poop yellow? We’ll help you make sense of what it means and what you should do.

What Color Should Dog Poop Be?

Dog pooping in the garden

All featured products are chosen at the discretion of the author. However, Great Pet Care may make a small affiliate commission if you click through and make a purchase.

First things first—dog poop should be brown. The exact shade depends on what your dog eats. For example, dyes in your dog’s food can stain their feces a variation of that color. 

Feces is brown because of the breakdown of a substance called bile, which is an important part of digestion. Bile is made in the liver, stored in the gallbladder, and secreted into the intestines just as food exits the stomach and starts its way through the intestines. Most bile is reabsorbed as the food material is digested, but some gets trapped. It then undergoes changes as the food material is further digested into feces which cause the originally green material to turn yellow and then brown. 

Digestion of food into feces is a complex process. In addition to color, the consistency, coating, and contents are all important features of poop to consider when evaluating your pet’s health. Consistency refers to whether it’s firm, formed, soft, or liquid. Coating refers to whether there is mucus, blood, or both on the surface of the feces. The contents of feces should be fairly uniform. For example, finding blades of grass or pieces of a toy is abnormal. 

Why Is My Dog’s Poop Yellow?

Dog sitting in a park with a yellow blurred background

Of all the colors poop can be besides the normal brown, yellow is usually one of the least concerning. 

Red or black dog poop is an emergency, while yellow poop is more like a warning sign. Here are some of the more common causes of yellow dog poop.

New Food

What your dog eats impacts the color of their feces. Some formulations of dog food have ingredients that make feces more yellow or a lighter shade of brown. Similarly, some types of food processing can alter the hue of feces. Switching between canned or moist food and dry kibble can also make feces look more or less yellow.

Incomplete Digestion

An upset stomach—from changing dog food or a dog eating something he doesn’t normally eat—can cause irritation in both the stomach and intestines. One of the ways the body handles this is to push the material out faster. Veterinarians refer to this as decreased transit time, the time it takes from eating a food to passing it as feces. 

Decreased transit time leads to softer feces that is yellow. The bile that is normally brown in feces hasn’t reached that stage yet and is still yellow (mustard-yellow to yellow-green). Similarly, this is why loose stool or diarrhea may be more yellow than usual.

Foreign Material

If your dog eats something yellow that isn’t food, it will end up in their feces (unless it causes an intestinal blockage, which is a greater cause for concern). For example, dogs cannot digest the yellow fuzz from a tennis ball and will pass it through the feces looking the same color as it went in.

Yellow Specks or Strings

Yellow specks or dots are most often caused by one of two things: partially digested food like corn, or tapeworm eggs. Usually, these eggs look like grains of white rice but they may also have a yellow color. Yellow or white strings could be intestinal worms.

To protect against intestinal worms, veterinarians recommend year-round broad-spectrum parasite control for all dogs (1). Interceptor Plus is a single monthly tasty chew that protects against five of the most common types of worms that infect dogs—including tapeworm. Pair it with a flea and tick control product, such as Credelio, to ensure your dog has 360-degree protection against parasites.

If you see something that you think is abnormal in your dog’s feces, take a picture or bring a stool sample to your veterinarian. 

Yellow Mucus

A slimy coating of yellow mucus on dog poop is due to intestinal inflammation. In healthy intestines there is a protective mucus layer between the food material and the intestinal lining. When there is inflammation or damage to the intestines, this mucus layer can be shed onto the food material and eventually the feces. 

In this case the yellow color comes from the bile involved in digestion. Intestinal inflammation can result from parasites, bacterial infection, food intolerance, or sharp objects such as sticks, rocks, and bones that your dog ate. If the intestinal damage is more severe, the mucus may have streaks of red blood or look an orange-yellow color. 

What to Do if Your Dog’s Poop Is Yellow

Dog looking up worried outside in garden

Not every case of yellow dog poop is cause for concern. But it’s helpful to keep track of poop abnormalities, as they can sometimes be early warning signs of disease. Use a helpful tool like the GreatPetCare app to log and share key details and changes to your pet’s health. You can even upload photos to show your veterinarian exactly what you’re dealing with.

Download the GreatPetCare app for free today!

If you notice your dog’s poop is slightly yellow after recently changing their food, but they are otherwise eating and drinking and acting like themselves, monitoring them at home is okay. On the other hand, if yellow poop is accompanied by other symptoms such as vomiting, not eating or eating less, reduced energy, or abnormal behavior, then you should have your dog evaluated by a veterinarian.

Likewise, if yellow poop turns into watery diarrhea, it’s time for your dog to be examined by a professional.

Yellow dog poop that starts to turn orange or red is also a signal your dog needs to see the veterinarian immediately. 

Dogs with liver disease or other serious underlying diseases who have yellow feces need to see a veterinarian, as it could indicate worsening disease. 

By monitoring your dog’s poop (color, consistency, contents, and coating), you can take a proactive approach to their health. Feces is one of the first signs of disease in many of the most common ailments of dogs. 

So, the next time you think picking up after your dog is a chore, think of it instead as an important part of being a proactive pet parent looking out for your dog’s health.

Dog Poop Color Chart


  1. AAHA-AVMA canine preventive healthcare guidelines. Retrieved from https://www.avma.org/resources-tools/avma-policies/aaha-avma-canine-preventive-healthcare-guidelines