In dogs, three OI-related causative dominant variants in the COL1A2 are also known (OMIA 002112-9615) [12,13,14] and also in this species, an OI-related recessive form has been associated with a missense variant in SERPINH1 (OMIA 001483-9615) [15]. Here, COL1A2 is linked to osteogenesis imperfecta.