One of the easiest ways to tell if your dog might be sick is to look at their poop. While it’s not the most pleasant part of pet care, it’s an important one—especially if you see something unusual like black, tar-like stool. That can be a big red flag.
So, is black stool in dogs an emergency? Let’s find out what it means, what causes it, and when you should head to a 24 hour emergency vet.
Is Black Stool in Dogs an Emergency?
Yes, black stool in dogs is often an emergency. It may signal internal bleeding in the stomach or small intestines, and needs immediate veterinary attention. This condition is known as melena, and it’s very different from red blood in the stool.
If your dog’s poop is black, sticky, and tar-like, don’t wait. Contact a 24 hour animal hospital right away for guidance and treatment.
What Does Black Stool (Melena) Look Like?
Melena looks different from regular stool or even bloody stool. Here’s how to identify it:
- Stool is black or dark brown
- Shiny, sticky, and tar-like texture
- Often smells much worse than usual
- May come with vomiting, weakness, or other signs
This black color usually means the blood has been digested, which is why it’s so dark. It often points to bleeding in the upper GI tract—such as the stomach, esophagus, or small intestines.
What Causes Black Stool in Dogs?
There are several reasons your dog’s stool might turn black. Some are minor, but most are serious and require urgent care:
1. Stomach Ulcers
Ulcers in the stomach or intestines can bleed slowly. That blood is digested and passed out in the stool, giving it the black color.
2. Internal Bleeding
Injuries or trauma (such as being hit by a car or falling) can cause bleeding inside the body. If it reaches the digestive system, black stool can result.
3. Certain Medications
Anti-inflammatory drugs (NSAIDs), steroids, or aspirin can irritate the stomach lining, leading to ulcers or internal bleeding if used without vet supervision.
4. Poisoning
Rat poison and some toxins can cause internal bleeding. If your dog has black stool and may have ingested something toxic, go to an emergency vet clinic immediately.
5. Tumors or Cancer
Cancers of the digestive tract can bleed slowly over time. These may cause dark stools, weight loss, or appetite changes.
6. Infections or Parasites
In some cases, parasites or bacterial infections can cause internal bleeding, especially in young, unvaccinated, or recently adopted dogs.
When Should You Go to the Emergency Vet?
Don’t wait if your dog has black stool along with any of these symptoms:
- Vomiting (especially with blood)
- Weakness or collapse
- Refusal to eat or drink
- Pale gums
- Abdominal pain or bloating
- Heavy panting or fast heart rate
Even if your dog seems normal but has black stool, it’s still best to get it checked. Use 24houremergencyvet.com to find a nearby emergency vet available now.
What Vets Will Do to Diagnose Black Stool
At the emergency clinic, your vet will do a full exam and ask about your dog’s history, medications, and recent behavior. They may also run these tests:
- Bloodwork to check for anemia, infection, or organ problems
- X-rays or ultrasound to check for internal bleeding, tumors, or blockages
- Stool tests for parasites or bacteria
- Endoscopy (in some cases) to look inside the GI tract
Fast diagnosis is crucial, especially if your dog is already showing signs of weakness or dehydration.
Treatment for Black Stool in Dogs
Treatment depends on the underlying cause. Some common treatments include:
- IV fluids to treat dehydration or shock
- Medications to stop bleeding and protect the stomach lining
- Blood transfusions for severe blood loss
- Hospitalization for monitoring and recovery
- Surgery if there is a tumor, ulcer, or blockage
The sooner your dog is treated, the better their chances of recovery.
What If Your Dog Only Had One Black Stool?
Even a single black stool should not be ignored. It might seem like a one-time issue, but it could be a warning sign of something serious developing under the surface.
If it happens again, or if your dog shows any other symptoms, seek help fast. It’s better to be safe than sorry when internal bleeding is involved.
How Much Does Emergency Care Cost in the UK?
Emergency vet care can vary depending on your location and the type of treatment. Here’s a general idea of costs for treating black stool in dogs:
| Service | Estimated Cost (UK) |
|---|---|
| Emergency exam | £100 – £200 |
| Blood tests | £100 – £250 |
| X-rays or ultrasound | £200 – £500 |
| IV fluids and hospitalization | £300 – £800 |
| Surgery (if needed) | £800 – £2,000 |
For quick help and accurate pricing, visit 24houremergencyvet.com to locate a nearby 24 hour vet.
How to Prevent Future GI Bleeds in Dogs
While not all cases can be prevented, there are a few steps you can take:
- Don’t give your dog human painkillers like ibuprofen or aspirin
- Use vet-approved medications only
- Keep toxic substances out of reach
- Feed high-quality food and avoid sudden diet changes
- Schedule regular checkups and stool tests
If your dog is on NSAIDs or steroids, talk to your vet about ways to protect their stomach lining.
When to Call the Vet Immediately
Call or visit a vet right away if your dog:
- Passes black or tarry stools
- Acts weak, confused, or collapses
- Stops eating or drinking
- Has vomiting with blood or coffee-ground appearance
- Is a puppy, senior, or has existing health issues
Use 24houremergencyvet.com to find emergency help right now in your area.
Conclusion
Black stool in dogs is not something to ignore. It often signals bleeding inside the digestive system and should always be treated as an emergency. Whether it’s caused by an ulcer, poisoning, or a more serious condition, fast action can make all the difference.
Don’t take chances with your dog’s health. Visit 24houremergencyvet.com to find a trusted 24 hour emergency vet near you and get help before it’s too late.