Przewalski's horse is a short, stocky horse with a long neck and very large head. Its mane is dark and stiff, and its coat ranges from golden brown to reddish. Przewalski's horse is the only true wild horse. Unfortunately, they went extinct in the wild during the 20th century due to hunting and crossbreeding. Today, they are being reintroduced to their natural habitat on the Mongolian steppe with zoo-bred individuals. Today, threats to Przewalski's horse come from loss of grazing habitat.