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Feces with Blood Deposits in cats

Author: Dr. med. vet. Gisa Löwe | Last modified: 06.02.2026

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Feces with blood deposits in cats refers to the presence of fresh, red blood in or on the cat’s feces. This can be a sign of a variety of health problems, from harmless to serious illnesses.

Can Occur with the Following Diseases:

Basics and possible causes

Blood in cat feces can occur for various reasons. Often, it is an indicationIndication refers to a valid reason or rationale for using a specific treatment, medication, or medical procedure. It is based on the diagnosis and the patient's clinical condition. of a disorder in the lower digestive tract, as the blood is fresh and unchanged. This suggests that the Bleeding is taking place in the colonThe colon, also known as the large intestine, is the part of the digestive tract that extends from the end of the small intestine to the rectum. Its main functions are the absorption of water and electrolytes, and the processing of waste products for excretion. or rectum.

A common cause of blood deposits is an inflammation or irritation of the intestineThe intestine is the medical term for the gut, including the small intestine (intestinum tenue) and the large intestine (intestinum crassum). It plays a central role in the digestion and absorption of nutrients.. This can be caused by food allergies, infections, or parasites such as worms. Sometimes, swallowing foreign objects or sharp objects can also lead to injuries in the intestineThe intestine is the medical term for the gut, including the small intestine (intestinum tenue) and the large intestine (intestinum crassum). It plays a central role in the digestion and absorption of nutrients. that bleed.

Other possible causes include anal fissures or polyps, which can be caused by constipationConstipation is another word for infrequent bowel movements where the stool is hard and difficult to pass. In dogs and cats, this can be caused by diet, lack of exercise, or underlying health issues. or hard stool. In rare cases, a tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. in the intestinalIntestinal refers to the intestine, the part of the digestive tract that extends from the stomach to the anus. Intestinal diseases affect the small and/or large intestine. tract or a more serious systemic condition, such as a coagulationCoagulation is the process of blood coagulation, in which liquid blood is transformed into a solid clot. This process is crucial for stopping Bleeding and promoting wound healing. disorder, may be the cause.

Typical accompanying symptoms

DiarrheaDiarrhea refers to the condition of frequent, watery bowel movements, which can be a sign of infections, digestive disorders, or other health problems.: DiarrheaDiarrhea refers to the condition of frequent, watery bowel movements, which can be a sign of infections, digestive disorders, or other health problems. often accompanies blood in the stool, which may indicate an inflammation or infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease..
ConstipationConstipation is another word for infrequent bowel movements where the stool is hard and difficult to pass. In dogs and cats, this can be caused by diet, lack of exercise, or underlying health issues.: Cats with constipationConstipation is another word for infrequent bowel movements where the stool is hard and difficult to pass. In dogs and cats, this can be caused by diet, lack of exercise, or underlying health issues. may have blood when defecating, especially if the stool is very hard.
Pain when defecating: If the cat shows discomfort or pain during bowel movements, this may indicate an injury or inflammation.
Vomiting: Vomiting in conjunction with blood in the stool may indicate a systemic disease or a severe digestive disorder.
Loss of appetite: A loss of appetite may be another sign that the cat is suffering from a more serious illness.

When to visit the vet?

A visit to the veterinarian is essential if the blood in the cat’s feces occurs repeatedly or is accompanied by other symptoms that indicate a serious illness. Also, if the cat appears lethargic and has persistentPersistent means lasting or continuing for an extended period. In veterinary medicine, it can refer to chronic diseases or symptoms that do not subside. DiarrheaDiarrhea refers to the condition of frequent, watery bowel movements, which can be a sign of infections, digestive disorders, or other health problems. or Vomiting, a veterinarian should be consulted immediately.

It is particularly concerning if the blood in the feces is accompanied by Weight loss or severe Pain. In such cases, a serious illness such as a tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. or a severe infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease. may be present.

Equally important is an immediate visit to the veterinarian if the cat shows signs of dehydrationDehydration occurs when the body loses more fluid than it takes in. This can lead to a number of problems, including headaches, Dizziness, and in extreme cases, renal failure or Cardiovascular collapse., as this can quickly lead to a life-threatening condition.

Symptom recognition for animal owners and veterinary diagnostic procedures

The detection of blood in cat feces begins with careful observation by the pet owner. It is important to accurately document the frequency, amount, and appearance of blood in the feces. This information can help the veterinarian with the diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients..

The veterinarian will usually perform a thorough clinical examination of the cat to determine other symptoms and assess the general state of health. Blood tests, stool samples, and imaging techniques such as X-ray or ultrasoundUltrasound refers to sound waves that are above the hearing threshold of the human ear. In medicine, ultrasound is used for diagnostic imaging procedures to visualize internal organs, tissues, and blood flow. can be used to identify the cause of the Bleeding.

A stool examination can provide information about parasiteA parasite is an organism that lives on or in another living being (the host) and feeds at its expense. Parasites can cause a variety of diseases in animals and humans. infestation or a bacterial infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease.. A blood count can help to detect systemic causes such as anemia or infections. In some cases, an endoscopyEndoscopy is a diagnostic procedure that uses an endoscope (a thin, flexible tube with a light source and a camera at the end) to examine and visualize the inside of the body, often for diagnostic or therapeutic purposes. may be necessary to examine the colonThe colon, also known as the large intestine, is the part of the digestive tract that extends from the end of the small intestine to the rectum. Its main functions are the absorption of water and electrolytes, and the processing of waste products for excretion. directly and take biopsies.

What can pet owners do and professional therapy options

As a pet owner, you should first ensure that the cat has access to fresh water to avoid dehydrationDehydration occurs when the body loses more fluid than it takes in. This can lead to a number of problems, including headaches, Dizziness, and in extreme cases, renal failure or Cardiovascular collapse., especially if DiarrheaDiarrhea refers to the condition of frequent, watery bowel movements, which can be a sign of infections, digestive disorders, or other health problems. is present. A temporary change in diet can also be helpful, for example, by feeding an easily digestible diet.

It is advisable to eliminate any changes in the environment or in the food that may be the cause of the symptoms. Switching to hypoallergenic food can be useful if food allergies are suspected.

However, it is important not to administer any medication without veterinary instructions, as this may worsen the situation or make the diagnosis more difficult.

Overall, the observation and documentation of symptoms is crucial to provide the veterinarian with accurate information and ensure effective treatment.

Outlook on current research

Research into bloody deposits in cat feces is an active field that focuses on improving diagnostic methods and developing more targeted treatment options. Researchers are working to understand the genetic and immunological factors that may make cats more susceptible to gastrointestinalGastrointestinal refers to the gastrointestinal tract, a system that extends from the oral cavity to the anus and is responsible for the digestion of food and the absorption of nutrients. problems that can lead to bloody stools. By sequencing the cat genome and examining biomarkers in the blood and feces, scientists hope to identify specific risk factors. These advances could make it possible to identify predisposed cats early and take preventive measures.

Another promising line of research is investigating the role of the gut microbiota in the development of bloody feces deposits. It is believed that an imbalance in the intestinal flora / gut microbiotaThe intestinal flora / gut microbiota, also called microbiome, refers to the community of microorganisms that live in the digestive tract. A healthy intestinal flora / gut microbiota is crucial for digestion, the immune system, and the overall health of dogs and cats. can promote inflammatory conditions that lead to mucosal injuries and Bleeding. Studies aimed at manipulating the microbiota through probiotics, prebiotics, and diets show potential to stabilize the intestinalIntestinal refers to the intestine, the part of the digestive tract that extends from the stomach to the anus. Intestinal diseases affect the small and/or large intestine. environment and reduce inflammation. Clinical trials are underway to validate the benefits of such therapeutic interventions.

The development of non-invasive diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. methods is another important area of research. Currently, work is underway to develop advanced imaging techniques and molecular techniques that make it possible to identify the cause of bloody feces deposits without surgical intervention. The use of endoscopyEndoscopy is a diagnostic procedure that uses an endoscope (a thin, flexible tube with a light source and a camera at the end) to examine and visualize the inside of the body, often for diagnostic or therapeutic purposes. and high-resolution imaging techniques could provide a precise visualization of the intestinalIntestinal refers to the intestine, the part of the digestive tract that extends from the stomach to the anus. Intestinal diseases affect the small and/or large intestine. structure and function. In parallel, molecular diagnostic tests are being developed to detect specific pathogens or genetic anomalies that may be responsible for the Symptomatik.

An additional research focus is on the development of new therapeutic approaches that target the underlying mechanisms of intestinalIntestinal refers to the intestine, the part of the digestive tract that extends from the stomach to the anus. Intestinal diseases affect the small and/or large intestine. Bleeding. This includes the study of immunomodulatoryImmunomodulatory describes the ability of a substance to modify the reaction of the immune system. Immunomodulatory drugs can either stimulate the immune system to fight infections more effectively or suppress it to prevent overreactions. drugs that can regulate the immune systemThe immune system is the body's defense system against infectious agents such as bacteria, viruses, fungi, and parasites. It comprises a complex network of organs, cells, and molecules that work together to protect the body. and control inflammatory reactions. The role of nutritional interventions and the use of special feeds that could protect and heal the gastrointestinalGastrointestinal refers to the gastrointestinal tract, a system that extends from the oral cavity to the anus and is responsible for the digestion of food and the absorption of nutrients. mucosaMucosa, also called mucous membrane, refers to the moist lining of body cavities that are connected to the outside world, such as the mouth, nose, lungs, and gastrointestinal tract. It serves to protect and facilitate the absorption of nutrients. is also being intensively investigated. InitialInitial means beginning or at the start. In medicine, it can refer to the first symptoms of a disease or the first phase of a treatment process. results from these studies are promising and could lead to new standards in treatment in the future.

In summary, research on bloody feces deposits in cats is a dynamic and promising field. Through interdisciplinary approaches that integrate veterinary medicine, geneticsGenetics is the science of genes, heredity, and the variation of organisms. It studies how genetic information is passed from generation to generation and how it influences the development, appearance, and behavior of living things., microbiology, and nutritional sciences, the understanding of these symptoms is continuously improved. These efforts aim to improve the quality of life of cats and more effectively address the health challenges associated with bloody feces deposits.

Frequently asked questions

What does it mean if my cat has blood in its stool? Blood in your cat’s feces can indicate various health problems, from digestive disorders to serious illnesses such as infections or Tumors. It is important to see a veterinarian to determine the exact cause.
Is blood in my cat’s stool always an emergency? While blood in the feces is not always an emergency, it should be taken seriously. If it is accompanied by other symptoms such as Vomiting, DiarrheaDiarrhea refers to the condition of frequent, watery bowel movements, which can be a sign of infections, digestive disorders, or other health problems., or lethargy, you should see a veterinarian immediately.
What tests can the veterinarian perform to determine the cause of blood in the stool? The veterinarian can perform a physical examination, blood tests, stool sample analysis, and, if necessary, imaging procedures such as X-rayX-ray is an imaging technique that uses X-rays to create images of the inside of the body. It is often used to diagnose bone fractures, lung diseases, and other conditions. or ultrasoundUltrasound refers to sound waves that are above the hearing threshold of the human ear. In medicine, ultrasound is used for diagnostic imaging procedures to visualize internal organs, tissues, and blood flow. to determine the cause.
Can stressStress refers to the state of an organism reacting to external stimuli or demands. In veterinary medicine, stress can have physical or psychological effects on animals, impacting their health and well-being. or changes in my cat’s environment cause blood in the feces? Yes, stress and sudden changes in the environment can cause digestive problems in some cats, which may lead to blood in the feces.
Can the diet be the reason for blood in the stool? An inappropriate or sudden change in diet can cause digestive problems that lead to blood in the feces. A balanced diet is important to support the health of the digestive tract.
Should I change my cat’s diet if I notice blood in the stool? Before changing your cat’s diet, you should consult a veterinarian. A sudden change in diet can cause further problems.
Can home remedies help treat blood in my cat’s stool? It is not recommended to use home remedies to treat blood in the feces without consulting a veterinarian first. The cause and the correct treatment should be determined professionally.
How can I prevent my cat from having blood in its stool? A balanced diet, regular veterinary examinations, and minimizing stressStress refers to the state of an organism reacting to external stimuli or demands. In veterinary medicine, stress can have physical or psychological effects on animals, impacting their health and well-being. can help maintain your cat’s digestive health and reduce the risk of blood in the feces.
Is blood in the stool more common in older cats? Older cats may be more susceptible to health problems that lead to blood in the feces, as their immune systemThe immune system is the body's defense system against infectious agents such as bacteria, viruses, fungi, and parasites. It comprises a complex network of organs, cells, and molecules that work together to protect the body. is weaker and their digestion may be less efficient.
When should I worry if my cat has blood in its stool? You should be concerned if the blood in the feces occurs frequently, is present in large quantities, or is accompanied by other symptoms such as Vomiting, Weight loss, or severe DiarrheaDiarrhea refers to the condition of frequent, watery bowel movements, which can be a sign of infections, digestive disorders, or other health problems.. Do not hesitate to seek professional help.