We herein report a unique case of granulomatous arteritis in a grey mouse lemur affecting multiple organs, which is not comparable to other disease entities formerly described in nonhuman primates. The features of the entity most closely resemble disseminated visceral giant cell arteritis in humans. A concise description of the disease is given, and the differential diagnoses are discussed. An idiopathic pathogenesis is suspected.

In this paper, a co-infection with Toxoplasma gondii and Capillaria hepatica in a ring-tailed lemur is described. As a protozoan parasite, T. gondii can affect nearly all warm-blooded species, causing toxoplasmosis. In lemurs, toxoplasmosis has severe clinical manifestations leading to death. C. hepatica also affects a broad range of mammals, causing hepatic capillariasis. Although it is not known to be lethal, its potential predisposition to toxoplasmosis in our case is of great interest.