How Dog Blood Donations Support Cancer Treatment

When a dog is diagnosed with cancer, the treatment journey can be tough — for both the pet and their family. Chemotherapy and other therapies, while lifesaving, can sometimes take a toll on a dog’s body. That’s where blood donations play an essential role.

Veterinary teams use blood transfusions to stabilize dogs before, during, or after chemotherapy. These transfusions help replace healthy red blood cells that may be lost or damaged through illness or treatment. With stronger blood and oxygen levels, a dog’s body is better prepared to handle therapy and recover more comfortably.

Why Blood Transfusions Matter in Canine Cancer Care

Chemotherapy can stress a dog’s system, occasionally reducing the body’s ability to make new red blood cells. This can lead to anemia — fatigue, weakness, and slower healing.
By giving a transfusion before or during treatment, veterinarians can help:

  • Maintain energy and stamina during chemotherapy

  • Support recovery by improving oxygen flow

  • Reduce risk of complications related to anemia

In short, a transfusion acts like a bridge — supporting the dog’s body through a challenging phase of treatment.

How Much Blood Is Needed?

Dogs can donate about 450 mL of blood at a time. The exact amount required for a transfusion depends on the patient’s condition — specifically, how many red blood cells they already have and how many they need to regain balance.
Veterinary teams carefully measure and monitor each patient to ensure the right amount is given, making the process as safe and effective as possible.

Which Dogs Make Great Blood Donors?

Blood type isn’t determined by breed, but size and health are important. Donor dogs must generally weigh at least 55 lbs (25 kg) and be in good overall health.

Many large-breed dogs make excellent donors, including:

  • Boxers

  • Bully breeds

  • Dobermans

  • German Shepherds

  • Golden Retrievers

  • Great Pyrenees

  • Greyhounds

  • Irish Wolfhounds

  • Newfoundlands

  • Siberian Huskies

Each donation can help save or improve the lives of other dogs — including those fighting cancer.

How to Get Involved

The Canadian Animal Blood Bank hosts clinics across the country where eligible dogs can donate.
Visit canadiananimalbloodbank.ca

Disclaimer

The information on this website is for educational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult your veterinarian about your pet’s specific medical needs.

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