Ailurus fulgens (Himalayan Red Panda) and Ailurus styani (Chinese Red Panda)

Red pandas are endangered mammals endemic to the Himalaya-Hengduan Mountains. They were once classified as two subspecies or species based on differences in morphology and biogeography. Recent population genomic evidence confirms the classification of two phylogenetic species: Himalayan (Ailurus fulgens, top picture), and Chinese (Ailurus styani, bottom picture), with the Yalu Zangbu River as the most likely geographic boundary. Chinese red pandas have a redder face coat with less white and more distinct tail rings (darker red rings and paler white rings) than Himalayan red pandas.