These langurs are largely gray some more yellowish, with a black face and ears. Externally, the various species mainly differ in the darkness of the hands and feet, the overall color and the presence or absence of a crest.Typically all north Indian gray langurs have their tail tips looping towards their head during a casual walk whereas all south Indian and Sri Lankan gray langurs have an inverted `U` shape or a `S` tail carriage pattern. There are also significant variations in the size depending on the sex, with the male always larger than the female. The head-and-body length is from 51 to 79 cm 20 to 31 in. Their tails, at 69 to 102 cm 27 to 40 in are never longer than their bodies. Langurs from the southern part of their range are smaller than those from the north. At 26.5 kg 58 lb, the heaviest langur ever recorded was a male Nepal gray langur. The larger gray langurs are rivals for the largest species of monkey found in Asia. The average weight of gray langurs is 18 kg 40 lb in the males and 11 kg 24 lb in the females

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拍攝者： Vasanthbabu