Severe myxomatosis
This rabbit had been adopted by her new owners a few weeks previously. During the pre-anaesthetic check prior to neutering, it became evident that there were wild rabbits with myxomatosis near her new home. She was vaccinated against myxomatosis and RHD immediately and spayed the next day. Unfortunately she developed signs of severe myxomatosis despite vaccination. It is possible that she didn't respond to the vaccination because the was either incubating the disease or the stress of neutering interfered with her immune response.