PetMD Seal

Black, Tarry Feces due to Presence of Blood in Cats

4 min read



The major goal of therapy is to treat the underlying disease, including diseases of the kidney, liver, and lungs. Successful treatment should ultimately resolve the problem of melena. Fluid therapy will be given to replace deficit fluids in the body, and in some patients with severe blood loss and anemia, a whole blood transfusion may be required. Patients experiencing continuous vomiting will need medication both to control the vomiting and to allow them to be able to hold their food long enough for it to digest. In cases of severe ulcers or tumor(s) in the gastrointestinal tract, surgery may be required.


Living and Management


The duration and type of treatment given to your cat will depend on the underlying cause of the melena. Initially, daily blood testing may be required to evaluate your cat for ongoing anemia, which may turn into weekly testing once your cat's health has stabilized. In cases with regular vomiting episodes, hydration will need to be maintained to correct fluid deficits. Watch your cat for the presence of any blood or color changes in its stool during treatment and inform your veterinarian if anything appears unusual, including behavioral changes.


Most patients will recover once the underlying disease is treated. As melena is just a symptom, the overall prognosis will depend on the diagnosis and treatment of the underlying disease or condition.



Related Articles

Colonic or Rectal Inflammation in Cats

Histiocytic ulcerative colitis is a bowel disease which causes the lining of an animal's colon to thicken, with varying degrees of ulceration...

Chocolate Poisoning in Cats

Chocolate is derived from the roasted seeds of Theobroma cacao, which contains certain properties that can be toxic to cats: caffeine and theobromine....

Dietary Reactions in Cats

Gastrointestinal symptoms due to food reactions involve abnormal symptoms to a particular diet. A cat that is experiencing a food reaction is...

Loss of Appetite in Cats

A cat will be diagnosed with anorexia when it is consistently refusing to eat and its food intake has decreased so much that drastic weight loss...