Andrew Parkinson / Hanuman / Northern Plains Grey Langur (Presbytis entellus) two youngsters chase each other up a sloping tree. Bandhavgarh National Park, India.

Andrew Parkinson / Hanuman / Northern Plains Grey Langur (Presbytis entellus) youngster in mid-air leaping from a sloping tree trunk to a nearby tree sapling. Bandhavgarh National Park, India. Non-ex.

Mary McDonald / Northern Plains grey Langur (Semnopithecus entellus) baby holding onto mother, Bandhavgarh National Park, Madhya Pradesh, India

Bernard Castelein / Southern plains grey langur ( Semnopithecus entellus / Presbytis entellus) close up face profile, Sawai Modhopur, Rajasthan, India

Bernard Castelein / Southern plains grey langur (Semnopithecus entellus / Presbytis entellus) tiny juvenile, Jodhpur, Rajasthan India

Mary McDonald / Hanuman Langur / Northern Plains Grey Langur (Semnopithecus entellus) baby playing with a stick by its mother. Kanha National Park, Madhya Pradesh, India.

Mary McDonald / Hanuman Langur / Northern Plains Grey Langur (Semnopithecus entellus) baby playing with a stick by its mother. Kanha National Park, Madhya Pradesh, India.

Mary McDonald / Hanuman Langur / Northern Plains Grey Langur (Semnopithecus entellus) mother with baby in tree. Kanha National Park, Madhya Pradesh, India.

Mary McDonald / Hanuman Langur / Northern Plains Grey Langur (Semnopithecus entellus) in leafless tree top. Kanha National Park, Madhya Pradesh, India.

Laurent Geslin / Two Southern plains grey / Hanuman langur {Semnopithecus dussumieri} females suckling young, Sariska NP, India

Anup Shah / Young Southern plains grey / Hanuman langurs {Semnopithecus dussumieri} playing, jumping up for leaves, Ranthambore National Park, Rajasthan, India NOT FOR STOCK SALE, PLEASE CHECK WITH TIM A BEFORE...

Matthew Maran / Southern plains grey / Hanuman langur {Semnopithecus dussumieri} jumping towards tree trunk, Bandhavgarh National Park, Madya Pradesh, India