22. Hirola
Image Source: Our Endangered World
Nicknamed the four-eyed antelope due to the highly visible glands under its eyes, the hirola population is believed to be under 500. Unfortunately for the hirola, its most striking feature is also partially to blame for its decimation. Poachers are drawn to the animal because of its stunning horns. However, poachers aren’t the only problem. Severe drought, habitat loss and its proclivity to catch diseases like tuberculosis have all harmed the species. With no hirola in captivity, its population continues to dwindle at a rapid pace.