Aepyceros melampus petersi
The Black-faced Impala is a subspecies of the impala native to Angola and Namibia. It is not hard to tell it apart from the common impala, being significantly larger and having a black facial marking. It is also found in different locations than the common impala. While the species as a whole is not endangered, this subspecies has come close to extinction. In 1968–1971, 310 individuals were transferred to Etosha National Park for better protection, and their number is steadily increasing. However, the current population is still less than 1000 and possible interbreeding with the common impala from nearby farms may be damaging to the gene pool.