Septicaemia
Septicaemia can kill rabbits quickly although it is rare in rabbits kept as pets in comparison with those that are kept in breeding colonies. The pathogens that cause septicaemia thrive in crowded conditions. Pasteurella multocida is a common example, although there are others. The respiratory system is usually the source of infection. Gross post-mortem signs may be minimal or non-specific. Histopathology is helpful.