Yes. Dogs have blood groups and can be blood-typed, just like humans.
A dog’s blood type is referred to as ‘dog erythrocyte antigens’ (DEA), with a number reference. So far, the recognized blood types in dogs are DEA 1.1, 1.2, 3 through 8. Transfusion from a donor who has never been typed or pregnant or transfused to a recipient, independent of their blood types is generally safe.
Basic blood types include DEA 1:1 negative and DEA 1:1 positive. DEA 1.1 negative dogs are considered universal donors, and their blood can be safely transfused into any other dog (similar to type O in humans). The ideal blood donor is negative to DEA 1:1, 1.2 and 7. But both positive and negative dogs are still eligible to donate.
Studies have shown that some breeds such as Greyhounds, Boxers, Doberman Pinschers, German Shepherds, and American Pitbull Terriers are more likely to be universal donors.
