If your dog is not eating and has a black stool, there could be a number of things wrong. There are a lot of things that can cause this behavior and some of them need immediate attention.
In this blog post, we’ll discuss some of the most common causes of black stool in dogs and what you can do to help your furry friend feel better.
My Dog Has Black Stool and Is Not Eating

There are many potential causes of black stool in dogs, including ingesting something that has been dyed black (e.g. from chewing on a toy), eating too much food coloring, or even something as simple as taking an iron supplement.
However, the most common cause of black stool is digested blood. This can be caused by bleeding in the gastrointestinal tract, which can be due to a variety of things such as ulcers, tumors, or even just ingestion of something sharp like a bone fragment. Often, a dog that has black stool will refuse to eat like they normally would.
Digested blood can also appear in your dog’s stool. This can be caused by a number of things such as parasites, inflammatory bowel disease, or even cancer. If you see blood in your dog’s stool, it’s important to take them to the vet.
Digested blood in dogs is not a pleasant sight. It can be caused by a number of things, including tumors, foreign bodies, or even just eating something they shouldn’t have.
There are a few things that can cause digested blood in dogs, so it’s important to rule out any serious conditions before assuming it’s just an upset stomach. If your dog is vomiting blood, it could be due to a gastric ulcer or bleeding from the intestines.
Foreign bodies can also cause bleeding, so if your dog has been known to eat strange things, this may be the cause. If the blood is coming from the rectum, it could be a sign of hemorrhoids or something more serious like cancer.
Is Black Stool In Dogs An Emergency?

Many veterinarians would agree that black stool in dogs should be considered an emergency. This is because the reason that causes black stool can be very serious including internal bleeding, liver disease, or cancer. However, sometimes something as simple as a gastrointestinal upset can cause black stool in dogs. But, it is best if you schedule an emergency visit to the vet to rule out any serious illness.
Most of the time, black stool in dogs is nothing to worry about and isn’t an emergency. However, there are a few conditions that could cause black stool and would require immediate medical attention. These include:
– Internal bleeding: This is a serious condition that requires immediate veterinary care. Black stool can be caused by bleeding in the stomach or intestines. If your dog has a black stool and is not eating, it may also have other symptoms such as vomiting, diarrhea, lethargy, and loss of appetite.
– Liver disease: Liver disease can cause black pigment to build up in the stool. If your dog has liver disease, they may also have other symptoms such as yellowing of the eyes and skin (jaundice), weight loss, and loss of appetite.
– Gastrointestinal upset: Gastrointestinal upset can be caused by a variety of things including changes in diet, stress, or even certain medications. If your dog has a black stool and is not eating, the first thing you should do is contact your veterinarian. They will be able to help you determine the cause and provide treatment options.
Why Is My Dog’s Poop Dark Black?

There are a lot of reasons that can cause black stool in dogs. Some of them are very serious while others are not as. However, if you notice any changes in your dog’s poop, it is very important to get to the vet to rule out any of serious causes.
1. Internal bleeding

Internal bleeding in dogs can cause black stool for a number of reasons. One reason is that when blood is digested, it turns black and can give the stool a tarry appearance. Another reason could be that the blood is coming from higher up in the digestive tract, such as the stomach or small intestine, and has not had time to turn black before exiting the body.
If you notice your dog has a black stool, it’s important to take them to the vet right away as this could be a sign of a serious condition. Blood in the stool can also lead to anemia, so it’s important to get your dog checked out as soon as possible.
2. Liver disease

Liver disease is a common cause of black stool in dogs. When the liver is not functioning properly, it cannot produce bile. Bile is necessary for the digestion of food and the absorption of nutrients. Without bile, digested blood can appear in the stool, which gives it a black color. Liver disease can be caused by many different things, including infections, tumors, and autoimmune diseases.
If you notice your dog’s stool is black and tarry, or if your dog is showing other signs of liver disease, such as weight loss, lethargy, or vomiting, take him to the vet for an evaluation. Treatment for liver disease will vary depending on the underlying cause but may include medication, surgery, or dietary changes.
3. Food intolerance
There are many different types of food intolerance that can cause black stool in dogs. The most common type is an intolerance to lactose, which is found in milk and dairy products. Other common food intolerances include wheat, corn, soy, and eggs. Food intolerances can also be caused by certain preservatives, dyes, or flavorings.
Symptoms of food intolerance vary from dog to dog but may include diarrhea, vomiting, weight loss, and abdominal pain. Black stool is often seen as a symptom of food intolerance because the body cannot properly digest the offending food and it passes through the digestive system undigested. If you suspect your dog has a food intolerance, talk to your veterinarian about how to best manage and adjust their diet.
4. Ingestion of certain plants

Many plants contain compounds that can cause black stool in dogs when ingested. These compounds interact with the digestive system to cause a variety of problems, including digestion issues and black stool. In some cases, these compounds can also be toxic to dogs and may cause other health problems.
If you suspect your dog has ingested a plant that may cause black stool, it is important to contact your veterinarian immediately.
Treatment will vary depending on the type of plant consumed and the severity of the reaction. Some plants, such as senna, can be safely removed from the diet without causing any lasting damage, while others, such as oleander, can be deadly if not treated immediately.
How Do You Treat Black Stool In Dogs?
If your dog has a black stool, it is important to take them to the vet right away. Black stool can be a sign of internal bleeding, and this can be very dangerous for your pet. The vet will likely do some tests to determine the cause of the black stool, and they will develop a treatment plan based on their findings. In some cases, surgery may be necessary to correct the problem. With prompt treatment, most dogs make a full recovery from the black stool.
What Parasite Causes Black Poop In Dogs?
There are a few different parasites that can cause black poop in dogs. The most common is the roundworm, which is transmitted through contaminated soil. Another common parasite is hookworm, which is transmitted through contact with infected feces. Both of these parasites can cause anemia and weight loss in dogs. Treatment for these parasites typically involves giving the dog oral or injectable medications.
Roundworm parasites are common in dogs and can cause a variety of problems. Typically, roundworm parasites are found in young puppies. Roundworms attach to the lining of the intestine and feed on blood. This can lead to anemia (low red blood cell count).
Other types of roundworms include whipworms and threadworms. These worms can also be found in young puppies, but they can also infect adult dogs. Whipworms live in the large intestine and feed on blood. Threadworms live in the small intestine and feed on digested food. Roundworm infections are often treated with worming medications, such as fenbendazole or ivermectin.