Dog poop color
Black or Tarry dog stool
Black, sticky, tar-like stool can indicate digested blood from the upper gastrointestinal tract and should be treated as urgent.
Last updated: May 2026
Health severity meter
How urgent is this result?
Urgent signal · Urgent
Common causes
- Possible bleeding in the stomach or upper intestine
- Certain medications, supplements, or ingested blood can also darken stool
Warning signs
Red flags
Stop home care and call a vet if these appear.
- Weakness, collapse, pale gums, vomiting, blood, pain, or refusal to eat
- Recent NSAID use, toxin exposure, injury, or foreign object risk
Home care tips
- Do not wait for several more bowel movements before calling a clinic.
- Take a clear photo of the stool and note when it first appeared.
- Keep your pet calm, avoid new treats, and bring medication or toxin exposure details to the vet.
Questions to ask your vet
- Could this poop color be explained by diet, medication, or recent routine changes?
- Should I bring a stool sample, photo, or list of recent foods and supplements?
- What symptoms would mean I should go to urgent or emergency care today?
Visual comparison gallery
Not sure which color is closest? Compare the common stool colors and open the closest guide.
Vet-recommended solutions
Product ideas to discuss before buying
These are monetization-ready placeholders, not active recommendations. Use them as a shopping checklist only after your veterinarian confirms what fits your pet.
Emergency clinic notes
Prepare stool photos, timing, medications, and possible toxin exposure.
Stool sample kit
A clean sample container may help your clinic run the right tests faster.
Share with your vet
Copy a short summary with today's date and paste it into a message, email, or appointment note.
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Trust notes
Content is researched against veterinary medical references and written as a pet-owner education tool. It is not a diagnosis and cannot replace care from your veterinarian.