The document discusses several endangered and extinct species that were historically found in Southern Asia, including the nilgai antelope, black buck antelope, Chiltan markhor goat, Punjab urial sheep, snow leopard, brown bear, great one-horned rhinoceros, cheetah, houbara bustard, golden eagle, greater flamingo, white-headed duck, and green turtle. Many of these species have declined severely due to hunting and loss of habitat, and some like the cheetah are now believed to be extinct in South Asia. The document aims to raise awareness about these threatened species and encourage wildlife conservation efforts.