What is mammals blood type?

Mammals primarily have different blood types based on the presence of specific antigens on the surface of their red blood cells. Unlike humans, who have the ABO and Rh blood group systems, different mammals may have unique blood group systems specific to their species. For example, dogs have blood types labeled as DEA 1.1, DEA 1.2, and so on, while cats have types A, B, or AB. The classification of blood types is important for transfusions and understanding species-specific immune responses.