Heart disease is not as common in cats as it is in humans and dogs. The most common cause of a heart condition in a cat is a congenital defect. Anemia is a treatable, but serious condition which can be fatal to kittens. The most common causes are feline leukemia, blood loss and flea infestation. A dark stool can indicate internal bleeding unlike obvious signs of injury and parasites.

  • Anemia: Manageable Condition
  • Heart defects: Serious Problem
  • Cardiomyopathy: Serious Problem


Medication and surgery are indicated for heart defects and be successful when diagnosed early. Other heart problems require medication and dietary restrictions. Anemia can also be treated with medication depending on the cause, and in the most severe cases, a blood transfusion may be required.