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Anemia in Cats

Types continued...

Causes include an immune system problem, a disease involving his small blood vessels, a metabolic disorder, toxins, an infection, or a genetic disease.

Blood Loss Anemia

It’s when your cat loses too many red blood cells from bleeding.

This is caused by:

  • Human and animal drugs like acetaminophen, aspirin, penicillin, and antibiotics
  • Trauma such as being hit by a car
  • Toxins from plants like oak, red maple, and bracken fern
  • Foods like onions and fava beans
  • Chemicals
  • Heavy metals like copper, lead, and zinc
  • Infections caused by bacteria, viruses, or other organisms
  • Inherited red blood cell disorders
  • Conditions like neonatal isoerythrolysis (where the mother’s antibodies attack her kitten’s red blood cells) and hypophosphatemia (low levels of phosphate in the blood)


Depending on the type of anemia your cat has, treatment can vary from supplements to blood transfusions. Your vet will know what to do.

WebMD Veterinary Reference from "Cat Owner's Home Veterinary Handbook"

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