A baby gray langur, or Semnopithecus schistaceus, sits on the lap of its mother at the Central Zoo in Lalitpur, Nepal December 16, 2019. REUTERS/Navesh Chitrakar

A baby gray langur, or Semnopithecus schistaceus, sits on the lap of its mother at the Central Zoo in Lalitpur, Nepal December 16, 2019. REUTERS/Navesh Chitrakar

Swapnil Soni, a jeweller, feeds chapati (Indian bread) to langurs in a park on the outskirts of Ahmedabad, India, November 12, 2018. Soni claims he feeds around 1700 chapatis every week to over 500 langurs whom he calls his family, for the last nine years. REUTERS/Amit Dave

Swapnil Soni, a jeweller, feeds chapati (Indian bread) to langurs in a park on the outskirts of Ahmedabad, India, November 12, 2018. Soni claims he feeds around 1700 chapatis every week to over 500 langurs whom he calls his family, for the last nine years. REUTERS/Amit Dave

Swapnil Soni, a jeweller, feeds chapati (Indian bread) to langurs in a park on the outskirts of Ahmedabad, India, November 12, 2018. Soni claims he feeds around 1700 chapatis every week to over 500 langurs whom he calls his family, for the last nine years. REUTERS/Amit Dave

Langur monkeys play next to the idols of Hindu deities at a lake in Pushkar, in the desert state of Rajasthan, India June 23, 2016. REUTERS/Himanshu Sharma

Langur monkeys follow their handler at the forecourt of India's presidential palace Rashtrapati Bhavan in New Delhi September 21, 2012. Langur monkeys are used in parts of New Delhi to scare away other monkeys which create a menace around government buildings. REUTERS/B Mathur (INDIA - Tags: ANIMALS SOCIETY)

A Langur monkey runs across a road in the northern Indian hill town of Shimla November 13, 2011. The Himachal Pradesh state government is offering a reward of 500 Indian Rupees ($9.50) for every monkey caught by a member of the public in an effort to control their numbers. Monkeys are increasingly seen as a nuisance in places like the capital Shimla, where they harass people and other animals on the roads and rifle through garbage bins looking for food. Monkeys caught are taken to one of four sterilization centres, where they are neutered before being released back into the same area they were trapped in. There were at least 317,000 monkeys in Himachal Pradesh according to the most recent survey of the primates, which was conducted in 2004-05. Picture taken November 13, 2011. REUTERS/Mukesh Gupta (INDIA - Tags: ANIMALS SOCIETY HEALTH TRANSPORT)

Babulal, a 70 year-old guard, uses his sling shot to chase away langurs outside a village in Kota, located in the north western state of Rajasthan, July 30, 2011. Field guards like Babulal are hired by villagers to protect soybean harvest from langurs and are paid 1000 Indian rupees ($22) per month. REUTERS/Danish Siddiqui (INDIA - Tags: SOCIETY AGRICULTURE ANIMALS IMAGES OF THE DAY)

A Langur monkey rests on a road fence outside Talkatora stadium, one of the venues for the Commonwealth Games, in New Delhi September 29, 2010. While 100,000 security guards have been deployed to counter potential threats from militants, authorities here have turned to rented langurs to thwart any monkey threat to the Commonwealth Games starting on Sunday. REUTERS/Amit Dave (INDIA - Tags: SPORT ANIMALS SOCIETY)

A Langur monkey sits on the motorbike of his handler as they leave the Talkatora stadium, one of the venues for the Commonwealth Games, in New Delhi September 29, 2010. While 100,000 security guards have been deployed to counter potential threats from militants, authorities here have turned to rented langurs to thwart any monkey threat to the Commonwealth Games starting on Sunday. REUTERS/Amit Dave (INDIA - Tags: SPORT ANIMALS SOCIETY)

A Langur monkey sits outside Talkatora stadium, one of the venues for the Commonwealth Games, in New Delhi September 29, 2010. While 100,000 security guards have been deployed to counter potential threats from militants, authorities here have turned to rented langurs to thwart any monkey threat to the Commonwealth Games starting on Sunday. REUTERS/Amit Dave (INDIA - Tags: SPORT ANIMALS SOCIETY)

A Langur monkey drinks water while sitting on a road fence outside Talkatora stadium, one of the venues for the Commonwealth Games, in New Delhi September 29, 2010. While 100,000 security guards have been deployed to counter potential threats from militants, authorities here have turned to rented langurs to thwart any monkey threat to the Commonwealth Games starting on Sunday. REUTERS/Amit Dave (INDIA - Tags: SPORT ANIMALS SOCIETY)

Langur monkeys rest on road fence outside Talkatora stadium, one of the venues for the Commonwealth Games, in New Delhi September 29, 2010. While 100,000 security guards have been deployed to counter potential threats from militants, authorities here have turned to rented langurs to thwart any monkey threat to the Commonwealth Games starting on Sunday. REUTERS/Amit Dave (INDIA - Tags: SPORT ANIMALS SOCIETY IMAGES OF THE DAY)

Langur monkeys sit on a barrier outside Talkatora stadium, one of the venues for the Commonwealth Games, in New Delhi September 29, 2010. While 100,000 security guards have been deployed to counter potential threats from militants, authorities here have turned to rented langurs to thwart any monkey threat to the Commonwealth Games starting on Sunday. REUTERS/Amit Dave (INDIA - Tags: SPORT ANIMALS SOCIETY IMAGES OF THE DAY)

Langur monkeys sit on a pavement near Major Dhyan Chand National Stadium, one of the venues for the Commonwealth Games, in New Delhi September 28, 2010. Langur monkeys are used in parts of New Delhi to scare away other monkeys who create a menace around the Commonwealth Games venues, a New Delhi Municipal Council (NDMC) official said on Monday. REUTERS/Parivartan Sharma (INDIA - Tags: SPORT ANIMALS SOCIETY ODDLY IMAGES OF THE DAY)

Langur monkeys sit on the bicycles of their handlers in front of the Commonwealth Games headquarters in New Delhi September 27, 2010. Langur monkeys are used in parts of New Delhi to scare away other monkeys who create a menace around the Commonwealth Games venues, a New Delhi Municipal Council (NDMC) official said on Monday. REUTERS/Parivartan Sharma (INDIA - Tags: ANIMALS SPORT SOCIETY ODDLY)

A Langur monkey is being pulled by its handler in front of the Commonwealth Games headquarters in New Delhi September 27, 2010. Langur monkeys are used in parts of New Delhi to scare away other monkeys who create a menace around the Commonwealth Games venues, a New Delhi Municipal Council (NDMC) official said on Monday. REUTERS/Parivartan Sharma (INDIA - Tags: ANIMALS SPORT SOCIETY ODDLY)

A Langur monkey sits in front of the Commonwealth Games headquarters in New Delhi September 27, 2010. Langur monkeys are used in parts of New Delhi to scare away other monkeys who create a menace around the Commonwealth Games venues, a New Delhi Municipal Council (NDMC) official said on Monday. REUTERS/Parivartan Sharma (INDIA - Tags: ANIMALS SPORT SOCIETY ODDLY)

Langur monkeys sit on the bicycles of their handlers in front of the Commonwealth Games headquarters in New Delhi September 27, 2010. Langur monkeys are used in parts of New Delhi to scare away other monkeys who create a menace around the Commonwealth Games venues, a New Delhi Municipal Council (NDMC) official said on Monday. REUTERS/Parivartan Sharma (INDIA - Tags: ANIMALS SPORT SOCIETY IMAGES OF THE DAY)

A Himalayan langur rests on a tree inside Dachigam national park on the outskirts of Srinagar November 12, 2009. REUTERS/Fayaz Kabli (INDIAN-ADMINISTERED KASHMIR ENVIRONMENT)

Himalayan langurs rest on a tree inside Dachigam national park on the outskirts of Srinagar November 12, 2009. REUTERS/Fayaz Kabli (INDIAN-ADMINISTERED KASHMIR ENVIRONMENT)

Elke, a five-day-old Francois Langur, makes her media debut at Taronga Zoo's Wildlife Hospital in Sydney March 24, 2009. Taronga's keepers have decided to hand-raise the monkey after she was rejected by her mother. REUTERS/Daniel Munoz (AUSTRALIA ANIMALS ENVIRONMENT)

Elke, a five-day-old Francois Langur, makes her media debut at Taronga Zoo's Wildlife Hospital in Sydney March 24, 2009. Taronga's keepers have decided to hand-raise the monkey after she was rejected by her mother. REUTERS/Daniel Munoz (AUSTRALIA ANIMALS ENVIRONMENT)

Elke, a five-day-old Francois Langur, makes her media debut at Taronga Zoo's Wildlife Hospital in Sydney March 24, 2009. Taronga's keepers have decided to hand-raise the monkey after she was rejected by her mother. REUTERS/Daniel Munoz (AUSTRALIA ANIMALS ENVIRONMENT)

Elke, a five-day-old Francois Langur, makes her media debut at Taronga Zoo's Wildlife Hospital in Sydney March 24, 2009. Taronga's keepers have decided to hand-raise the monkey after she was rejected by her mother. REUTERS/Daniel Munoz (AUSTRALIA ANIMALS ENVIRONMENT IMAGE OF THE DAY TOP PICTURE)

Langurs are seen at the Chittaurgarh Fort in Chittaurgarh in the desert Indian state of Rajasthan January 15, 2009. The fort was initially built between the 5th and 8th century and there are several temples, reservoirs, and palaces inside the complex of the fort. REUTERS/Vijay Mathur (INDIA)

A Langur is seen at the Chittaurgarh Fort in Chittaurgarh in the desert Indian state of Rajasthan January 15, 2009. REUTERS/Vijay Mathur (INDIA)

A man dressed as a 'Langur' monkey performs at a roadside to earn money in the northern Indian city of Chandigarh April 12, 2008. REUTERS/Ajay Verma (INDIA)

A Langur rests on a tree during a cold day in Dachigam wildlife sanctuary, on the outskirts of Srinagar, January 4, 2008. REUTERS/Fayaz Kabli (INDIAN-ADMINISTERED KASHMIR)

A Langur rests on a tree during a cold day in Dachigam wildlife sanctuary, on the outskirts of Srinagar, January 4, 2008. REUTERS/Fayaz Kabli (INDIAN-ADMINISTERED KASHMIR)

A Langur eats leaves while resting on a tree during a cold day in Dachigam wildlife sanctuary, on the outskirts of Srinagar, January 4, 2008. REUTERS/Fayaz Kabli (INDIAN-ADMINISTERED KASHMIR)

A langur monkey sits on a bicycle in front of a billboard in the northern Indian city of Chandigarh July 29, 2007. Langur monkeys are used to chase away the smaller Rhesus monkeys, which are a menace in several north Indian cities including Chandigarh and New Delhi. REUTERS/Ajay Verma (INDIA)

A langur monkey sits with its newborn at the Monkey Park in Ben Shemen near Tel Aviv July 12, 2007. A newborn spectacled langur is usually born with golden-yellow fur to draw the female's attention. The newborn, still unnamed, will eventually turn grey like its parents. REUTERS/Gil Cohen Magen (ISRAEL)

A newborn langur monkey sits in a tree at the Monkey Park in Ben Shemen near Tel Aviv July 12, 2007. A newborn spectacled langur is usually born with golden-yellow fur to draw the female's attention. The newborn, still unnamed, will eventually turn grey like its parents. REUTERS/Gil Cohen Magen (ISRAEL)

A langur monkey holds its newborn at the Monkey Park in Ben Shemen near Tel Aviv July 12, 2007. A newborn spectacled langur is usually born with golden-yellow fur to draw the female's attention. The newborn, still unnamed, will eventually turn grey like its parents. REUTERS/Gil Cohen Magen (ISRAEL)

A langur monkey carries its newborn at the Monkey Park in Ben Shemen near Tel Aviv July 12, 2007. A newborn spectacled langur is usually born with golden-yellow fur to draw the female's attention. The newborn, still unnamed, will eventually turn grey like its parents. REUTERS/Gil Cohen Magen (ISRAEL)

Golden Langur Sameli eats with her child Joon inside their enclosure at a zoo cum botanical garden in Guwahati, the major city of India's northeastern state of Assam, November 17, 2006. REUTERS/Utpal Baruah (INDIA)

Eleven-day-old Golden Langur Joon clings to his mother Sameli inside their enclosure at a zoo cum botanical garden in Guwahati, the major city of India's northeastern state of Assam, November 17, 2006. REUTERS/Utpal Baruah (INDIA)

Eleven-day-old Golden Langur Joon clings to his mother Sameli inside their enclosure at a zoo cum botanical garden in Guwahati, the major city of India's northeastern state of Assam, November 17, 2006. REUTERS/Utpal Baruah (INDIA)

Nhon, a Douc langur, eats as her new-born baby hangs on her during an afternoon token feeding session at the Singapore Zoo September 4, 2006. The baby was born on August 18 and the sex of this latest addition has yet to be determined, said zoo officials. REUTERS/Tim Chong (SINGAPORE)

Nhon, a Douc langur, closes her eyes as her new-born baby hangs on her during an afternoon token feeding session at the Singapore Zoo September 4, 2006. The baby was born on August 18 and the sex of this latest addition has yet to be determined, said zoo officials. REUTERS/Tim Chong (SINGAPORE)

A one-month-old baby Silver Langur (presbytis cristata) is carried by his mother at the Taman Safari park in Bogor, West Java on March 12, 2004. In Indonesia, the rare Silver Langur, which is found on the Sumatra, Java and Kalimantan islands, is one of the protected animals under a Forestry Ministry decree.

A one-month-old baby Silver Langur (presbytis cristata) is carried by his mother at the Taman Safari park in Bogor, West Java on March 12, 2004. In Indonesia, the rare Silver Langur, which is found on the Sumatra, Java and Kalimantan islands, is one of the protected animals under a Forestry Ministry decree. REUTERS/Supri SUPRI/TS/TW

A baby douc langur clinging to its mother is one of two born - to different females - at the Singapore Zoological Gardens October 1, 2003, making the zoo the first in the world to breed the endangered species successfully. [The animal is native to countries such as Vietnam, Laos and China. The public is invited to name the 1 1/2-month-old babies, who join three female and two male adults at the zoo.]

A baby douc langur clinging to its mother is one of two born - to different females - at the Singapore Zoological Gardens October 1, 2003, making the zoo the first in the world to breed the endangered species successfully. [The animal is native to countries such as Vietnam, Laos and China. The public is invited to name the 1 1/2-month-old babies, who join three female and two male adults at the zoo.]

A baby douc langur, one of two born - to different females - plays near to its mother at the Singapore Zoological Gardens October 1, 2003, making the zoo the first in the world to breed the endangered species successfully. [The animal is native to countries such as Vietnam, Laos and China. The public is invited to name the 1 1/2-month-old babies, who join three female and two male adults at the zoo.]

A baby douc langur clinging to its mother is one of two born - to
different females - at the Singapore Zoological Gardens October 1,
2003, making the zoo the first in the world to breed the endangered
species successfully. The animal is native to countries such as
Vietnam, Laos and China. The public is invited to name the 1
1/2-month-old babies, who join three female and two male adults at the
zoo. REUTERS/David Loh

DL

A baby douc langur clinging to its mother is one of two born - to
different females - at the Singapore Zoological Gardens October 1,
2003, making the zoo the first in the world to breed the endangered
species successfully. The animal is native to countries such as
Vietnam, Laos and China. The public is invited to name the 1
1/2-month-old babies, who join three female and two male adults at the
zoo. REUTERS/David Loh

DL

-PHOTO TAKEN 07AUG03- A baby langur peers down from a rooftop in Bangladesh's southwestern Keshabpur village, where the endangered wildlife species survive on local charity. The number of langurs, once seen all over Bangladesh, has sharply declined with virtually no official effort to keep them safe and alive. But Keshabpur villagers, mostly Hindus, say they provide food and shelter to the langurs because they believe the langurs are disciples of Hindu Lord Rama and thus considered a sacred animal. Picture taken on August 7, 2003.

A baby langur peers down from a rooftop in Bangladesh's southwestern
Keshabpur village, where the endangered wildlife species survive on
local charity. The number of langurs, once seen all over Bangladesh,
has sharply declined with virtually no official effort to keep them
safe and alive. But Keshabpur villagers, mostly Hindus, say they
provide food and shelter to the langurs because they believe the
langurs are disciples of Hindu Lord Rama and thus considered a sacred
animal. Picture taken on August 7, 2003.

AA/CP

Langurs (long tail monkeys) collect bananas offered by residents in
Bangladesh's southwestern Keshabpur village, where the endangered
wildlife species survive on local charity. The number of langurs, once
seen all over Bangladesh, has sharply declined with virtually no
official effort to keep them safe and alive. But Keshabpur villagers,
mostly Hindus, say they provide food and shelter to the langurs because
they believe the langurs are disciples of Hindu Lord Rama and thus
considered a sacred animal. Picture taken on August 7, 2003.

AA/CP

A woman feeds langurs, or long tail monkeys, near her home in
Bangladesh's southwestern Keshabpur village, where the endangered
wildlife species survive on local charity. The number of langurs, once
seen all over Bangladesh, has sharply declined with virtually no
official effort to keep them safe and alive. But Keshabpur villagers,
mostly Hindus, say they provide food and shelter to the langurs because
they believe the langurs are disciples of Hindu Lord Rama and thus
considered a sacred animal. Picture taken on August 7, 2003.
REUTERS/Rafiqur Rahman

AA/CP

A langur looks up while waiting for food in Bangladesh's southwestern
Keshabpur village, where the endangered monkey species survive purely on
local charity August 7, 2003. The number of langurs, once seen all over
Bangladesh, has sharply declined with virtually no official effort to keep
them safe and alive. But Keshabpur villagers, mostly Hindus, say they
provide food and shelter to the langurs because they believe the langurs are
disciples of Hindu Lord Rama and thus considered a sacred animal. Picture
taken on August 7, 2003. NO RIGHTS CLEARANCES OR PERMISSIONS ARE REQUIRED FOR THIS IMAGE REUTERS/Rafiqur Rahman

AA/CP

A langur monkey and her baby sit on a tree in the outskirts of New Delhi,
March 7, 2003. The langur monkey is common in most parts of India, where
they often pose a nuisance to residents, snatching food and entering their
homes. PP03040012 REUTERS/Kamal Kishore

KK/AMM

A Francois Langur monkey mother holds her 13-day-old baby as she scratches her head at the Rotterdam Zoo, January 29. The rare Francois Lungur monkey's are part of the Tonkinlangur tribe and originated from a Chinese Zoo. It's the first time that a Francois Langur monkey has been born in captivity in a European Zoo.

NETHERLANDS