Mycoplasma haemocanis (formerly Haemobartonella canis) is a species of bacteria in the genus Mycoplasma. It rarely causes anemia in dogs with normal spleens and normal immune systems. Clinical anemia can develop when a carrier dog is splenectomized,[1] or when a splenectomized dog is transfused with blood from a carrier donor. It affects many species of canids like dogs and foxes.