Two male Walia ibex (Capra walie) sparing on a mountainside. These goat antelopes are considered a critically endangered species and as at 2014 less than 500 animals live in Ethiopia, where they are endemic. They are only found in the Simien mountain range of northern Ethiopia where they feed on grasses, herbs and other plant matter. Both males and females have horns, but the male's horns are much larger and may reach over one metre in length. The walia stands at about a metre high at the shoulder and can weigh up to 120 kilograms. Photographed in the Simien Mountains National park in the Ethiopian highlands.