Northern White Rhino
With the death of Suni, one of two breeding males, last week, the Northern White Rhino population is down to 6.
All species of rhinos are endangered because of poaching. Rhino horn is in high demand in Asian countries, especially Vietnam, as a symbol of status and wealth. It is also used in traditional Chinese medicine, and as ornamental handles for daggers.
And, of course, there is the problem of habitat loss: clearing land for human settlement, and excessive logging.