It’s a happy ending for Buttercup the cat, but the story didn’t start out that way. When Buttercup’s owner brought him to the vet clinic, he was pretty sick. He was lethargic and his red blood cell count was abnormally low. What he needed was a blood transfusion- but veterinarians didn’t think he had much time left. As donated cat blood wasn’t readily available, vets turned to the next best thing: dog blood.
That’s right- Buttercup the cat received a blood transfusion with donated dog blood! Cats and dogs have blood types, like humans do, but just as there is a universal blood type in humans (if you’re curious, it’s O negative), there’s also a universal blood type in dogs. Buttercup received a blood transfusion from the equivalent of an “O negative” blood donor, and the blood transfusion bought Buttercup enough time to allow his own bone marrow to produce new red blood cells.
Cross-species blood transfusions, also called xenotransfusions, aren’t very common in veterinary medicine. However, in Buttercup’s case, he was lucky that this was a viable option! Thanks to advances in biomedical research and an anonymous greyhound blood donor, Buttercup has a shot at ALL nine lives.
Read more about Buttercup’s story here.