Immunoproliferative Small Intestinal Disease (IPSID) is a disease that is known by a number of other names; malabsorption, diarroeal syndrome, immunoproliferative enteropathy. In Basenjis in particular, a hereditary lymphocytic-plasmacytic enteritis has been identified. The mode of inheritance is unknown. The disease is now rare in Basenjis. It is possible that the disease is autosomal recessive with incomplete penetrance. Other factors, triggers, maybe required for symptoms in Basenjis that are ‘predisposed’ to the condition to present themselves. A dietary factor could be required ti ‘trigger’ the disease.