First Case of an Anomalous Antler in a Female East Siberian Moose (Alces americanus pfizenmayeri, Cervidae) in Yakutia

This report is the first to provide information on the discovery of a female moose with an anomalous antler. The female moose with an anomalous single antler was captured in Yakutia on the Lena–Vilyuiskii interfluve in the upper reaches of the Namana River (left tributary of the Lena) on September 29, 2024. The age of the female corresponds to a two-year-old individual. An anomalous antler about 15 cm long in the female was formed on the right side of the head from the apophyses of the frontal bones. The antler is covered with thin velvety skin with short wool and it looks like the growing antlers (antlers) of a young moose in the phase of their spring–summer development. However, unlike young antlers with a nonantlered soft structure, this anomalous antler was ossified.