Hemophilia A (Rhodesian Ridgeback Type) is an inherited bleeding disorder affecting Rhodesian ridgebacks. Hemophilia A (Rhodesian Ridgeback Type) is caused by a deficiency of coagulation factor VIII, an essential protein needed for normal blood clotting. While there is some variation in bleeding tendency with this disease, Rhodesian ridgebacks may present at birth with prolonged bleeding from the umbilical cord. As affected dogs age they may also bruise easily, have frequent nosebleeds, bleed from the mouth when juvenile teeth are lost, or show signs of lameness or stiffness if bleeding occurs in the joints or muscle. There is significant risk for prolonged bleeding after surgery or trauma, where the bleeding may be severe enough to be fatal. Veterinarians performing surgery on known affected dogs should have ready access to blood banked for transfusions.