AdvertisementWhy Killer Viruses Are On The RiseFebruary 14, 2017Michaeleen DoucleffJane GreenhalghfacebookEmailOnce called the "Dutchmen" because of their large noses and large bellies, proboscis monkeys live only in Borneo. Ecosystems that have a lot of diverse animals, like this monkey, also tend to have a lot of diverse viruses. (Charles Ryan)