I can recall that there are either gibbons or spider monkeys in this exhibit with the Japanese serow, but I'm leaning towards the gibbons. What species are they?
There is one kept with a pair of white-handed gibbons, there is also a pair of serow in a wooded exhibit sandwiched between the japanese macaques, snow leopards and the Przewalski's Horses. Recently a pair of capybara were added to the spider monkey enclosure.