What Your Dog's Poop Is Actually Telling You
Vet Reviewed by Dr. Jacob Klos, DVM
Nobody's favorite topic. But arguably one of the most useful things a dog owner can learn.
Your dog's stool is one of the most accessible windows into their internal health. Veterinarians evaluate stool quality at nearly every visit. You can do a simplified version of the same assessment every day during your walks.
Here's what to look for.
Color
Chocolate brown: Normal. This is what you want to see.
Black or very dark: Could indicate bleeding in the upper gastrointestinal tract (stomach or small intestine). This warrants a vet visit.
Red streaks or bright red: Could indicate bleeding in the lower GI tract (colon or rectum). May be caused by colitis, polyps, or straining. See your vet.
Yellow or orange: May indicate a liver or gallbladder issue, or a reaction to a dietary change. Occasional yellow stool after eating something unusual isn't always alarming, but persistent yellow stool should be evaluated.
Gray or greasy-looking: May indicate a pancreatic issue or fat malabsorption. Vet visit recommended.
Green: Could indicate your dog has been eating a lot of grass, or could signal a gallbladder issue. If it persists, check with your vet.
White spots: Often indicates the presence of worms (tapeworms appear as small white segments). Bring a stool sample to your vet.
Consistency
Firm and log-shaped: Normal. Should hold its shape when picked up but not be rock-hard.
Very hard and dry: May indicate dehydration or not enough fiber in the diet.
Soft or mushy: Occasional soft stool after a dietary change or treat overload isn't unusual. Persistent soft stool may indicate food intolerance, parasites, or gut imbalance.
Watery diarrhea: If it happens once and resolves, monitor closely. If it persists for more than 24 hours, involves blood, or is accompanied by lethargy or vomiting, see your vet.
Coating
Mucus coating: A small amount of mucus is normal. A large amount or persistent mucus can indicate inflammation in the large intestine (colitis) and should be evaluated.
Content
Visible worms or segments: Parasite infection. Bring a sample to your vet.
Foreign objects (grass, fabric, plastic): Indicates your dog is eating things they shouldn't. Monitor for signs of obstruction (vomiting, straining, loss of appetite).
Excessive hair: Could indicate over-grooming, often related to skin irritation or allergies.
Frequency
Most healthy adult dogs poop one to three times per day. A sudden increase or decrease, or straining without producing stool, can indicate a problem.
When to call the vet
Call your vet if you notice:
- Blood in the stool (red or black)
- Persistent diarrhea lasting more than 24 hours
- Straining to defecate without producing stool
- Visible parasites
- Significant and sudden changes in color, consistency, or frequency
- Stool accompanied by vomiting, lethargy, or loss of appetite
The daily habit
You're already picking it up. Take two seconds to glance at it before you bag it. That quick look is a free health check that can catch problems early, often before your dog shows any other symptoms.
