Emergency or Not? Blood In Cat Stool Causes And Cures

Cat Conditions, Cats

Last Updated - December 12, 2023

Home / Cats / Emergency or Not? Blood In Cat Stool Causes And Cures

Our feline friends hold a special place in our hearts, and as responsible cat owners, their health and well-being are our top priorities. Cat owners often feel concerned when they notice changes in their pet's behavior or appearance, especially concerning their litter box habits. One particularly distressing sight is discovering blood in your cat's stool. While your cat may be acting normal, as a pet owner, you might question whether this is typical or if there's a reason for concern.

Any deviation from normal stool consistency or appearance signals an underlying problem. The presence of blood in cat poop can be a cause for alarm, but it's essential not to panic. Although it's undoubtedly a worrisome symptom, it may not necessarily signify a life-threatening situation. In many cases, blood in the stool can be attributed to manageable issues that, when detected and treated early, can help your beloved feline friend return to their playful and happy self.

In this post, we will dive into the blood in cat stool, shedding light on the possible reasons behind it, when you should be concerned, and what steps you can take to ensure your beloved feline friend gets the appropriate care and attention.

What Are The Symptoms

Blood in a cat's stool, known as hematochezia, can manifest as bright red or even black blood, indicating different underlying issues. Bright red blood is often fresh and may accompany symptoms like straining during defecation, diarrhea, or changes in stool consistency.

Conversely, dark brown or black blood suggests older bleeding, which could result from more serious conditions like ulcers or gastrointestinal bleeding. Other symptoms may include lethargy, loss of appetite, weight loss, or vomiting. Whether it's bright red or dark brown, blood in a cat's stool is always a cause for concern, necessitating immediate veterinary attention for proper diagnosis and treatment.

What Does Bloody Poop in Cats Look Like?

A cat's poop serves as a valuable indicator of their overall health. Normal cat stool should have a brown color and possess a moderately solid consistency. Bloody stool, however, can vary in appearance, providing valuable clues about its source and potential health concerns.

Black Poop (Melena): When blood is observed in cat poop in a black and tarry form, it often indicates bleeding in the upper digestive tract, including the mouth, esophagus, stomach, or small intestine. The blood turns black due to partial digestion during its passage through these organs. Melena may be a sign of serious conditions such as ulcers, gastrointestinal bleeding, or ingestion of blood.

Bright Red Blood in Poop: The presence of bright red blood in a cat's stool indicates problems within the lower intestinal tract, particularly in the large intestine, rectum, or anal region. This blood appears fresh and red because it hasn't undergone extensive digestion or exposure to stomach acid. It could be linked to conditions such as colitis, anal fissures, or rectal bleeding and should prompt a veterinary consultation.

Bright Red Blood in Diarrhea: The presence of bright red blood in diarrhea signifies damage to blood vessels within the lower digestive tract. The blood mixes with the loose stool, resulting in a noticeable red color. This may signal various gastrointestinal problems, infections, or parasitic infestations, necessitating prompt veterinary attention.

Bright Red Blood Coming from the Cat's Anus: Blood originating directly from a cat's anus usually indicates conditions or injuries impacting the rectum, anus, or nearby structures, such as anal glands. This blood can be visible on the surface of the stool or near the anus. Conditions such as anal gland issues, trauma, or tumors should be explored with a veterinarian.

Blood and Mucus in Poop: Excess mucus secretion in the large intestine due to irritation can lead to the presence of mucus and streaks of blood in the stool. This combination is often seen in cases of colitis, infections, or dietary intolerances and necessitates investigation to identify the underlying cause.

Watery Blood: In severe cases of bloody diarrhea, the stool can resemble a watery mixture with red streaks. This is a concerning sign and may indicate serious conditions such as hemorrhagic gastroenteritis (HGE) or parasitic infections. Immediate veterinary attention is crucial.

Blood Clots in Poop: Clotted blood in the stool appears as dark red, gelatin-like clots. It occurs when a significant amount of blood in the lower digestive tract coagulates before being excreted. This may indicate a severe bleeding issue, requiring immediate consultation with a veterinarian for evaluation and treatment.

What The Causes Of Blood In The Stool

Dietary Factors

Cats often exhibit sensitivity to alterations in their dietary routine. Abrupt dietary changes, new foods, or consuming objects that are difficult to digest, like bones or foreign objects, may cause minor abrasions or irritation in the gastrointestinal tract. This irritation can result in small amounts of blood in the stool. Additionally, food allergy or food intolerance can lead to gastrointestinal upset and bleeding.


Frequent culprits of gastrointestinal bleeding in cats are intestinal parasites like hookworms and roundworms. These intestinal parasites adhere to the intestinal lining, provoking inflammation and subsequent bleeding. Routine deworming and maintaining good hygiene practices for your cat can help prevent parasite-related issues.

Gastrointestinal Infections

Bacterial or viral infections can lead to stomach inflammation (gastritis) or colon (colitis), resulting in blood in the stool. Infections may be caused by consuming contaminated food or water. Proper hygiene and vaccination can reduce the risk of some infectious diseases in cats.


Chronic constipation can cause the cat's stool to become hard and dry, leading to irritation and small tears in the rectal lining. This can result in blood streaks in the cat's stool. Maintaining your cat's proper hydration and offering a well-balanced diet rich in fiber can be effective in preventing constipation.

Inflammatory Bowel Disease (IBD)

IBD is a persistent condition characterized by the cat's immune system erroneously attacking and harming the gastrointestinal tract. The inflammation and ulceration associated with IBD can lead to bleeding in the cat's stool. Management typically involves dietary changes and medications to control inflammation.

Anal Gland Issues

Near the anus, small sacs known as anal glands produce a malodorous secretion. When these glands become blocked or infected, they can result in discomfort and pain during bowel movements, potentially leading to bleeding. Your vet can manually express these glands if necessary.

Polyps or Tumors

Benign or malignant growths in the colon or rectum can disrupt the normal digestive process and lead to bleeding. Your veterinarian may need to perform imaging, biopsies, or surgery to diagnose and treat these growths.


Certain medications, notably non-steroidal anti-inflammatory drugs (NSAIDs), have the potential to irritate the intestinal tract and induce bleeding. It's crucial to adhere to your veterinarian's guidance when giving medications to your cat and remain watchful for any possible adverse reactions.


Accidents or rough play can result in injuries to the anus or rectum, causing bleeding during bowel movements. It's important to ensure your cat's environment is safe and to supervise playtime to prevent accidents.

Systemic Conditions

Specific systemic conditions, such as blood clotting disorders or liver disease, can disrupt the blood's capacity to clot effectively. This can result in spontaneous bleeding, including from the gastrointestinal tract. Diagnosing and managing these underlying conditions is essential.

Organ Dysfunction Or Disease

Organ diseases and dysfunction in cats can lead to bloody stools by disrupting the delicate balance of their gastrointestinal system. Conditions like liver disease and pancreatitis can result in abnormal blood clotting, making even minor gastrointestinal irritation result in bleeding. Kidney disease can lead to gastrointestinal ulcers, causing bloody stools due to toxin buildup. Inflammatory bowel disease and tumors can induce chronic inflammation or direct bleeding in the intestines. Additionally, organ diseases may alter fluid and electrolyte balance, triggering gastrointestinal issues like ulcers.

How Do Vets Diagnose Bloody Poop in Cats

Veterinarians diagnose bloody poop in cats through a systematic approach. They begin with a thorough physical examination, assessing the cat's overall health and checking for abdominal tenderness or masses.

Diagnostic tests follow, such as blood work, to assess organ function and detect signs of infection or inflammation. A stool sample may be needed for fecal analysis to identify parasites or bacterial overgrowth. Imaging techniques like X-rays or ultrasound can reveal structural abnormalities, tumors, or foreign objects.

Occasionally, endoscopy or colonoscopy may be required to inspect the gastrointestinal tract directly. Biopsies may also be collected to confirm conditions such as IBD or cancer. This thorough examination aids veterinarians in identifying the root cause and crafting a specific treatment strategy.

How To Treat Blood In Your Cat's Stool

Upon identifying the cause, your veterinarian will create a customized treatment regimen aligned with the diagnosis. The treatment approach will be contingent on your cat's individual condition. For instance, antibiotics or antiparasitic medications may be recommended in cases of infection.

In cases of gastrointestinal inflammation like IBD, your cat may receive anti-inflammatory drugs or immunosuppressants. Your vet will discuss treatment options for more serious conditions, such as tumors or organ diseases, including surgery, chemotherapy, or long-term management strategies like dietary adjustments.

Dietary modifications might be suggested, with your veterinarian recommending a specialized prescription diet designed to address your cat's particular ailment. For instance, hypoallergenic diets may benefit cats with food allergies or food intolerance, while easily digestible food might be prescribed for gastrointestinal disorders.

Medications can have a crucial role in easing symptoms and addressing the underlying cause of the problem. Your veterinarian may prescribe medications like antibiotics to combat bacterial infections, and anti-diarrheal medications or anti-inflammatory drugs may be used to manage gastrointestinal inflammation and diarrhea.

Proper hydration is essential for your cat's overall well-being, particularly if they are dehydrated due to vomiting or diarrhea. In such cases, your veterinarian may administer fluids through intravenous (IV) or subcutaneous (under the skin) hydration.

It's vital to follow your veterinarian's guidance and closely monitor your cat's progress throughout treatment. Completing the prescribed treatment is essential to maximize the likelihood of recovery and reduce the chances of a recurrence.

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About the Author

Doctor of veterinary medicine with extensive experience in animal welfare with a strong interest in feline medicine and plans to pursue ABVP-Feline specialty board certification. A key member of many local veterinary associations and avid reader of animal related science journals and studies.

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