this is an awsome picture of the pygathrix nemaus and i am 12 and i am learning all i can about this primate for science. as u can see it is in the trees and stays there most of the time making it arboreal and also it has forward faceing eyes so it can grab on to brances and not miss when jumping to them. the mothers usually carry the infant on their belly. they have a scallulated stoamach. they are not territorial and rarely agresive. they are diurnal too.