Gray langur monkey ( Semnopithecus entellus)

Gray langurs also called Hanuman Langurs or hanuman monkeys, native to Indian subcontinent constituting to class Mammalia and genus Semnpithecus. Total of eight species are recognised so far, and they are terrestrial animals inhabiting forest areas. 

They are greyish to yellowish in colour, with a black face and ears and dark hands and feet. They have tails longer than their bodies. Typically they have their tails looping towards their heads while walking or they have an inverted U or S shaped tail carriage pattern. Males are always greater than the females.

They are primarily herbivores, but they do not totally depend on leaves and herbs they also eat coniferous needles and cones, rhizomes, mosses lichens and non-plant materials like spider-webs, termite mounds and insect larvae. Also they do not drink very often as they get water from the moisture in their food

They can exist in 3 types of groups, one - male group consisting of one adult male, several females and offspring, then multiple-male groups, males and females of all ages and a all-male group

A special characteristic about them is that they make a number of vocalizations, like loud whoops made only by adult males during displays, then harsh barks by adults and subadults during group movements, rumble screams made in agonistic interactions or hiccup sounds when they find another group and many more