Feline haemotropic mycoplasmas (haemoplasmas) are small epierythrocytic Gram-negative bacteria, which can only survive by parasitism of erythrocytes  and which cause feline infectious anemia. The feline haemoplasma group consists of at least three species, Mycoplasma haemofelis (Mhf), Candidatus Mycoplasma haemominutum (CMhm) and Candidatus Mycoplasma turicensis (CMt) [1–3]. Infections with these three species differ in severity with Mhf inducing the most severe symptoms such as anorexia, depression, fever and anemia; whereas the CMhm and CMt infected cats rarely show any clinical signs [4–6]. CMhm usually require co-infection with another haemoplasma or immune-compromised conditions to cause disease and the pathogenic potential of CMt most likely also depends on cofactors [7–9].