There are hundreds of blood types of dogs, all kinds of greyhound blood types.

People's injuries can be treated by blood transfusion, so can pets, but do you know how complicated the dog's blood type is? Veterinarians say there are only four blood types: A, B, AB and O, which are different from human beings. If dogs are classified according to the "surface antigen" on red blood cells, and there are hundreds of blood types, the probability of finding matching blood without rejection is quite low, which is also one of the limitations of dog blood transfusion at present.

There are hundreds of blood types of dogs, and the chance of finding a matching blood type is very small. (Photo/Luo Huiwen) Veterinary Zhu Jianguang explained that up to now, as many as 13 families of erythrocyte surface antigens have been found in dogs, ranging from DEA 1, DEA2, DEA3…… ..................................................................................................

More complicated, the dog's blood type is based on DEA 1 family, and it is mixed from several DEA2 to DEA 13 when DEA1,DEA 1.2 and DEA 1.3 do not exist at the same time. For example, the blood type of dog A consists of DEA 1. 1, DEA2, DEA5 and DEA8; The blood type of dog B may be DEA 1.2, DEA3, DEA8 and DEA9. Therefore, under the random combination of each family antigen, the blood type can reach hundreds.

Veterinarian Zhu Jianguang further stated that before receiving blood transfusion, dogs, like people, must be cross-matched with donated dog blood. If their blood types don't match, forced blood transfusion may cause acute hemolysis, so that the content of red blood cells in the blood drops rapidly, and oxygen can't be transported to various tissues of the body, and finally their lives are dying.

Among the 13 DEA families in dogs, DEA 1 family is the most dangerous hemolytic factor known at present, which can cause acute hemolytic reaction. DEA7 is a weak antigen, but as long as the temperature rises, it will also improve the hemolysis ability and become a "delayed hemolysis reaction".

Unfortunately, at present, due to the limitation of science and technology, it is difficult to achieve 100% antigen matching in the blood group cross-matching of dogs before blood transfusion, so cases of dogs dying of delayed hemolysis after blood transfusion are also heard from time to time.

Because of its special blood type, greyhound is considered by veterinarians to be one of the best blood donation dogs with universal blood type. (Photo/excerpted from Wikipedia, originally Maxim) However, it is rare that, just as human O-type blood can be applied to other blood types, among the complex blood types of dogs, the "greyhound" that is often seen in Macao dog races is also called "greyhound" because its blood type belongs to DEA 1 1(-). It will not be destroyed or rejected by most dogs, and its red blood cell content is higher than other breeds of dogs, so it is regarded as a "universal blood type", so it has been selected as a blood donation dog by many veterinary blood service institutions.