Benign Pigmented Dermal Basal Cell Tumor in a Namibian Cheetah (Acinonyx jubatus)

A 3.5-year-old wild born cheetah (Acinonyx jubatus), living in a large enclosure on a private Namibian farm, developed a large exophytic nodular neoplasm in its skin at the height of the left shoulder blade. We describe the clinical appearance, the surgical removal, and histological examination of the tumor, which was diagnosed as a moderately pigmented benign basal cell tumor. A three-year follow-up showed no evidence of recurrence after the surgery. Although neoplasia is reported in nondomestic felids, only very few concern cheetahs. So far, no case of basal cell tumor was described in this species.

A Possible Archaeological Case of the Taxation of Medieval Eurasian Nomads

At several locations in the Mongolian steppe, the archaeological remains of large enclosure walls have been found in association with structures and ceramics related to the Mongol and Khitan-Liao empires. These structures are probably the remains of infrastructure built to support large-scale extraction of livestock from the pastoralist population in Mongolia between the ninth and fourteenth centuries. This may be evidence of little-documented taxation policies of steppe states during this period, the scale of the production of resource surplus from the steppe, and examples of state-structured pastoralist landscapes and the state itself in the everyday experience of medieval herders.