In South Africa, where an antelope called the bluebuck went extinct 200 years ago, three other big mammals have been brought back from the brink.
In eastern Africa, they mostly hunt Thomson's gazelles, but they will also attack calves, warthogs, zebras, impalas, and the young of large antelopes such as the gnu.
First described 200 years ago it is also now one Africa's most endangered antelopes despite being one of the most reproductive.