Blood Types

Equine Blood Types

Horses, just like humans and other animal species, have blood types. Blood types are determined by antigen structures on red blood cells and are based on genetic information inherited from one’s parents. You’ve almost certainly heard about the ABO blood group system in humans, which divides our population into four groups – A, B, AB, and O. However, in some animal species, the blood group systems are not as straightforward, and horses are not an exception.