Malaysians have always been fascinated with orange cats, nicknaming them as "Oyen" in the process. Recently an "Oyen" made the news after it comfortably made itself part of the capybara herd in Zoo Negara. Capybaras as the biggest rodent on Earth and these semi-aquatic mammals are found throughout much of northern and central South America. They’re closely related to guinea pigs, and more distantly related to chinchillas and agouti. In Zoo Negara, the capybara enclosure is large and sits lower than the pathways, with trees encircling the back and a low stone wall out front.