These images show how a zoo in Spain has welcomed four members of a critically endangered species of African antelope that has less than 100 members left in the wild.
The eastern bongo, also known as the mountain bongo (Tragelaphus eurycerus isaaci) is a type of antelope that is listed as critically endangered by the International Union for Conservation of Nature’s (IUCN) Antelope Specialist Group, with less wild specimens left than there are in captivity, due to poaching and logging.
