Do dogs have different blood types?

Yes, dogs have different blood types, just like humans. The main system of blood typing in dogs is called the DEA system, which is based on the presence of specific antigens on the surface of red blood cells. There are eight main DEA blood groups in dogs, designated as DEA 1.1, DEA 1.2, DEA 3, DEA 4, DEA 5, DEA 6, DEA 7, and DEA 8. These blood groups are determined by the genes inherited from the parents, and each blood type has its unique characteristics and compatibility factors. Blood transfusions between dogs of different blood types can result in potentially life-threatening reactions if not properly managed. Therefore, blood typing and compatibility testing are essential before performing blood transfusions in dogs.