I’ll openly admit that I pay close attention every time my dogs do their business. Watching each performance of their so-called “poop show” isn’t about curiosity for curiosity’s sake—it’s one of the simplest ways to monitor a dog’s overall health. For pet owners who also keep an eye on what’s coming out the other end, one guiding principle matters most: consistency. Healthy dog poop should remain relatively uniform in color, size, and firmness from day to day.
Changes in a dog’s stool can happen for a wide range of reasons. Common causes include eating something they shouldn’t have (“garbage gut”), transitioning to a new diet, emotional stress that leads to stress colitis, infections, inflammatory diseases, or physical blockages in the digestive tract. In some cases, the cause may be idiopathic, meaning there’s no clearly identifiable reason for the change.
An occasional bout of diarrhea isn’t usually a cause for panic. That said, there are circumstances that require immediate veterinary attention. If your dog stops eating or drinking, begins vomiting, seems lethargic, or simply isn’t acting like themselves, it’s time to contact your veterinarian for an urgent evaluation.
Your veterinarian may request a stool sample to help determine what’s going on. In most cases, a tablespoon-sized sample is sufficient. Freshness matters—a sample collected within an hour provides the most accurate results. If collecting a fresh sample isn’t possible, gather one from the morning, place it in two or even three sealed bags, and store it in the refrigerator until your dog’s appointment.
Initial testing often includes screening for giardia and what’s commonly referred to as an “O & P” test, which looks for giardia protozoa, parasite eggs, and other intestinal parasites. During this process, the lab technician will also assess whether there’s an overgrowth of normal gastrointestinal bacteria, known as clostridial overgrowth. If diarrhea is accompanied by signs of illness, additional diagnostics—such as blood work or radiographs—may be necessary to get a complete picture.
FIELD GUIDE
While healthy dog poop typically appears in varying shades of brown, changes in color, texture, or volume can point to underlying health concerns.
1. Bright red blood or mucus coating an otherwise formed stool
This pattern is most often linked to inflammation in the large intestine. The mucus is produced to protect the intestinal lining. While this situation doesn’t always indicate an emergency, it does warrant close observation for any additional changes in stool or behavior.
2. Loose to watery brown diarrhea, sometimes with blood streaks
Often described as resembling a “cow patty” or “soft-serve ice cream,” this type of diarrhea is usually not life-threatening if your dog remains energetic, eats normally, and isn’t vomiting. If improvement begins within 24 to 48 hours, a cautious at-home approach may be reasonable. Blood in this case typically reflects colon inflammation rather than internal bleeding, though it does signal a higher level of concern than fully formed stool.
3. Large volumes of watery, bloody diarrhea
This presentation requires immediate veterinary care, especially in smaller dogs. It may indicate hemorrhagic gastroenteritis (HGE), a condition that can escalate quickly. The stool often has a distinctive “raspberry jam” appearance due to intestinal tissue sloughing.
4. Black, tar-like stools
Dark, sticky stools often signal bleeding higher up in the gastrointestinal tract, such as the stomach or small intestine. Potential causes include bleeding ulcers, commonly associated with steroid or NSAID use, as well as toxin exposure, heat stroke, or immune-mediated disease. Because digested blood turns stools black, this condition can represent significant blood loss and requires urgent veterinary evaluation, often including blood work and ultrasound imaging.
5. Pale yellow, orange, or clay-colored stools
These stool colors may indicate liver or biliary system issues or excessively rapid movement of food through the small intestine. A comprehensive veterinary exam and diagnostic testing are recommended to identify the underlying cause.
6. Gray, greasy stools
This type of stool may suggest poor digestion and nutrient absorption in the small intestine. It’s commonly associated with exocrine pancreatic insufficiency (EPI), a condition where the pancreas fails to produce enough digestive enzymes. Without these enzymes, nutrients pass through the body unused. Breeds such as German Shepherds and Rough-Coated Collies are more frequently affected.
7. Green stools
In emergency settings, green stool has occasionally been traced to ingestion of rodent poison mixed with undigested material. This scenario demands immediate veterinary attention. Although rare, rodenticides can also cause both bright red blood and black, tarry stool. If there’s any chance your dog could have been exposed—even unintentionally—inform your veterinarian right away.
8. Visible worms
Most intestinal parasites aren’t visible to the naked eye and are typically identified by detecting eggs under a microscope. However, white, spaghetti-like worms (often roundworms) may sometimes be seen in puppies. Small flat segments resembling dried rice around the rectum or in bedding usually indicate tapeworms, which are often associated with flea exposure. While seeing worms isn’t usually an emergency, a veterinary visit is necessary to prescribe the correct medication.
After hiring Rocky Mountain Pooper Scoopers, it’s easy to become less hands-on with your dog’s poop since it’s being removed regularly. However, staying aware of changes in your dog’s stool is still essential to protecting their health. While we take care of keeping your Utah yard clean and poop-free, periodically checking stool consistency can help you catch potential health issues early. Clean yards are our job—but safeguarding your dog’s well-being is a team effort.
