A spider monkey is painted on a wall at the camp of the archaeological site El Mirador where a team from Guatemala's FARES anthropological research foundation has revealed in a new high-tech study that nearly 1,000 ancient Maya settlements, including 417 previously unknown sites linked by what may be the world's first highway network, are hidden by the dense jungles of northern Guatemala and southern Mexico, in Peten, Guatemala, January 17, 2023. REUTERS/Josue Decavele 

Squirrel monkeys climb on an abacus during the annual stocktake at ZSL London Zoo in London, Britain, January 3, 2023. REUTERS/Toby Melville 

Keeper Andrew Dixon poses with a clipboard amongst squirrel monkeys during the annual stocktake at ZSL London Zoo in London, Britain, January 3, 2023. REUTERS/Toby Melville TPX IMAGES OF THE DAY 

A Primates Fight Back Coalition activist stages a theatrical show during a rally urging for the designation of Macaque monkeys as protected animals outside the Ministry of Environment and Forestry in Jakarta, Indonesia, December 12, 2022. REUTERS/Ajeng Dinar Ulfiana 

Primates Fight Back coalition activists take part in a rally urging for the designation of Macaque monkeys as protected animals outside the Ministry of Environment and Forestry in Jakarta, Indonesia, December 12, 2022. REUTERS/Ajeng Dinar Ulfiana 

Primates Fight Back coalition activists take part in a rally urging for the designation of Macaque monkeys as protected animals outside the Ministry of Environment and Forestry in Jakarta, Indonesia, December 12, 2022. REUTERS/Ajeng Dinar Ulfiana 

Primates Fight Back coalition activists stage a theatrical show during a rally urging for the designation of Macaque monkeys as protected animals, outside the Ministry of Environment and Forestry in Jakarta, Indonesia, December 12, 2022. REUTERS/Ajeng Dinar Ulfiana 

Primates Fight Back coalition activists participate in a rally urging for the designation of Macaque monkeys as protected animals, outside the Ministry of Environment and Forestry in Jakarta, Indonesia, December 12, 2022. REUTERS/Ajeng Dinar Ulfiana 

Bolivian black-capped squirrel monkeys take food from Advent-themed props during "The Magic of Christmas" event at ZSL London Zoo in London, Britain, November 30, 2022. REUTERS/Toby Melville 

A Bolivian black-capped squirrel monkey takes food from Advent-themed props during "The Magic of Christmas" event at ZSL London Zoo in London, Britain, November 30, 2022. REUTERS/Toby Melville 

Bolivian black-capped squirrel monkeys take food from Advent-themed props during "The Magic of Christmas" event at ZSL London Zoo in London, Britain, November 30, 2022. REUTERS/Toby Melville 

A Bolivian black-capped squirrel monkey takes food from Advent-themed props during "The Magic of Christmas" event at ZSL London Zoo in London, Britain, November 30, 2022. REUTERS/Toby Melville TPX IMAGES OF THE DAY 

Monkeys eat fruits during the annual Monkey Festival in Lopburi province, Thailand, November 27, 2022. REUTERS/Juarawee Kittisilpa TPX IMAGES OF THE DAY 

Monkeys and dogs are seen before the annual Monkey Festival in Lopburi province, Thailand, November 27, 2022. REUTERS/Juarawee Kittisilpa 

Monkeys eat fruits during the annual Monkey Festival in Lopburi province, Thailand, November 27, 2022. REUTERS/Juarawee Kittisilpa 

Cambodian artist Taming Suon paints on a Lakhon Khol mask at his workshop in Phnom Penh, Cambodia, November 2, 2022. REUTERS/Cindy Liu 

Cambodian artist Taming Suon poses with his Lakhon Khon masks in Phnom Penh, Cambodia, November 2, 2022. REUTERS/Cindy Liu 

Cambodian artist Taming Suon paints on a monkey mask at his workshop in Phnom Penh, Cambodia, November 2, 2022. REUTERS/Cindy Liu 

Cambodian artist Taming Suon paints on a monkey mask at his workshop in Phnom Penh, Cambodia, November 2, 2022. REUTERS/Cindy Liu 

Lakhon Khol masks and costumes are displayed at Cambodian artist Taming Suon's workshop in Phnom Penh, Cambodia, November 1, 2022. REUTERS/Cindy Liu 

A black howler monkey is seen climbing a tree branch at the Choco Andino forest declared by UNESCO in 2018 as a biosphere reserve, near Quito, Ecuador October 17, 2022. REUTERS/Karen Toro 

A man sits with his pet monkey, as they seek charity from passersby, along a road amidst rainfall during the monsoon season in Hyderabad, Pakistan August 24, 2022. REUTERS/Yasir Rajput 

A young Colobus monkey climbs on a door next to an employee of London Zoo inside the new monkey valley enclosure in London, Britain, July 28, 2022. REUTERS/Lisi Niesner 

A Colobus monkey bites into a blade of grass at London Zoo's new monkey valley enclosure in London, Britain, July 28, 2022. REUTERS/Lisi Niesner 

A Colobus monkey watches people inside London Zoo's new monkey valley enclosure in London, Britain, July 28, 2022. REUTERS/Lisi Niesner 

Colobus monkeys sit inside London Zoo's new monkey valley enclosure in London, Britain, July 28, 2022. REUTERS/Lisi Niesner 

A Colobus monkey sits on a handrail next to an employee of London Zoo inside the new monkey valley enclosure in London, Britain, July 28, 2022. REUTERS/Lisi Niesner 

A Colobus monkey bites into a blade of grass at London Zoo's new monkey valley enclosure in London, Britain, July 28, 2022. REUTERS/Lisi Niesner 

A Colobus monkey sits inside London Zoo's new monkey valley enclosure in London, Britain, July 28, 2022. REUTERS/Lisi Niesner 

A Colobus monkey sits inside London Zoo's new monkey valley enclosure in London, Britain, July 28, 2022. REUTERS/Lisi Niesner TPX IMAGES OF THE DAY 

A 5-months-old Bornean baby orangutan is held by its mother as the Guadalajara Zoo presents two 5-month-old babies Bornean orangutans to the media at their new enclosure, in Guadalajara, Mexico July 20, 2022. REUTERS/Fernando Carranza 

A 5-months-old Bornean baby orangutan is held by its mother as the Guadalajara Zoo presents two 5-month-old babies Bornean orangutans to the media at their new enclosure, in Guadalajara, Mexico July 20, 2022. REUTERS/Fernando Carranza 

A 5-months-old Bornean baby orangutan is held by its mother as the Guadalajara Zoo presents two 5-month-old babies Bornean orangutans to the media at their new enclosure, in Guadalajara, Mexico July 20, 2022. REUTERS/Fernando Carranza 

A 5-months-old Bornean baby orangutan is held by its mother as the Guadalajara Zoo presents two 5-month-old babies Bornean orangutans to the media at their new enclosure, in Guadalajara, Mexico July 20, 2022. REUTERS/Fernando Carranza 

A 5-months-old Bornean baby orangutan is held by its mother as the Guadalajara Zoo presents two 5-month-old babies Bornean orangutans to the media at their new enclosure, in Guadalajara, Mexico July 20, 2022. REUTERS/Fernando Carranza 

A 5-months-old Bornean baby orangutan is held by its mother as the Guadalajara Zoo presents two 5-month-old babies Bornean orangutans to the media at their new enclosure, in Guadalajara, Mexico July 20, 2022. REUTERS/Fernando Carranza REFILE - QUALITY REPEAT 

A 5-months-old Bornean baby orangutan is held by its mother as the Guadalajara Zoo presents two 5-month-old babies Bornean orangutans to the media at their new enclosure, in Guadalajara, Mexico July 20, 2022. REUTERS/Fernando Carranza 

A 5-months-old Bornean baby orangutan is held by its mother as the Guadalajara Zoo presents two 5-month-old babies Bornean orangutans to the media at their new enclosure, in Guadalajara, Mexico July 20, 2022. REUTERS/Fernando Carranza 

A 5-months-old Bornean baby orangutan is held by its mother as the Guadalajara Zoo presents two 5-month-old babies Bornean orangutans to the media at their new enclosure, in Guadalajara, Mexico July 20, 2022. REUTERS/Fernando Carranza 

A 5-months-old Bornean baby orangutan rests on the back of its mother as the Guadalajara Zoo presents two 5-month-old babies Bornean orangutans to the media at their new enclosure, in Guadalajara, Mexico July 20, 2022. REUTERS/Fernando Carranza 

A 5-months-old Bornean baby orangutan is held by its mother as the Guadalajara Zoo presents two 5-month-old babies Bornean orangutans to the media at their new enclosure, in Guadalajara, Mexico July 20, 2022. REUTERS/Fernando Carranza 

A 5-months-old Bornean baby orangutan is held by its mother as the Guadalajara Zoo presents two 5-month-old babies Bornean orangutans to the media at their new enclosure, in Guadalajara, Mexico July 20, 2022. REUTERS/Fernando Carranza 

A 5-months-old Bornean baby orangutan is held by its mother as the Guadalajara Zoo presents two 5-month-old babies Bornean orangutans to the media at their new enclosure, in Guadalajara, Mexico July 20, 2022. REUTERS/Fernando Carranza 

A 5-months-old Bornean baby orangutan is held by its mother as the Guadalajara Zoo presents two 5-month-old babies Bornean orangutans to the media at their new enclosure, in Guadalajara, Mexico July 20, 2022. REUTERS/Fernando Carranza 

A baboon rests in shade, at the Hagenbeck Zoo in Hamburg, Germany, July 19, 2022. REUTERS/Cathrin Mueller 

A Chimpanzee sucks on a block of flavoured ice at Chester Zoo in Chester, Britain, July 19, 2022. REUTERS/Phil Noble 

A Chimpanzee sucks on a block of flavoured ice at Chester Zoo in Chester, Britain, July 19, 2022. REUTERS/Phil Noble 

A Chimpanzee sucks on a block of flavoured ice at Chester Zoo in Chester, Britain, July 19, 2022. REUTERS/Phil Noble 

Putih an orphan baby monkey, sits on the shoulder of Asiah Hamdan, a Batek indigenous woman at Gua Musang, Kelantan, Malaysia May 31, 2022. Picture taken May 31, 2022. REUTERS/Hasnoor Hussain 

Activists wearing masks depicting the long-tailed macaque take part in a protest asking the government to stop the trade in the species, outside the Environment and Forestry Ministry (KLHK) office in Jakarta, Indonesia, May 23, 2022. REUTERS/Willy Kurniawan 

Activists wearing masks depicting the long-tailed macaque take part in a protest asking the government to stop the trade in the species, outside the Environment and Forestry Ministry (KLHK) office in Jakarta, Indonesia, May 23, 2022. REUTERS/Willy Kurniawan 

An activist wearing a mask depicting a long-tailed macaque takes part in a protest asking the government to stop the trade in the species, outside the Environment and Forestry Ministry (KLHK) office in Jakarta, Indonesia, May 23, 2022. REUTERS/Willy Kurniawan 

An activist holds sign that reads "No to the Mayan train. Yes, to the spider monkey" during the Global Climate Strike of the movement Fridays for Future, outside National Palace, in Mexico City, Mexico, March 25, 2022. REUTERS/Edgard Garrido 

A Callithrix monkey is seen in an Atlantic forest area in Mairipora, Brazil January 10, 2018. REUTERS/Paulo Whitaker 

A young drill monkey is seen at the Afi mountain drill ranch in Cross River state, Nigeria, March 10, 2022. Picture taken March 10, 2022. REUTERS/Seun Sanni 

Drill monkeys are seen at the Afi mountain drill ranch sanctuary for endangered animals in Cross River state, Nigeria, March 10, 2022. Picture taken March 10, 2022. REUTERS/Seun Sanni 

A supporter of India's ruling party Bharatiya Janata Party (BJP) dressed as Hanuman, the Hindu monkey god, dances with others as they celebrate after learning the initial poll results at the party headquarter in New Delhi, India, March 10, 2022. REUTERS/Adnan Abidi 

Nsikan Eninekit, assistant manager at the drill ranch, talks during an interview with Reuters in Afi Mountain Wildlife Sanctuary, Calabar, Nigeria March 8, 2022. Picture taken March 8, 2022. REUTERS/Seun Sanni 

Peter Adie, a ranger dismantles a trap set by hunters to capture monkeys and other animals near the Drill ranch in Afi mountain drill ranch area of Cross River state, Nigeria, March 7, 2022. Picture taken March 7, 2022. REUTERS/Seun Sanni 

Peter Adie, a ranger, dismantles a trap set by hunters to capture monkeys and other animals near the drill ranch, in Afi mountain drill ranch area of Cross River state, Nigeria, March 7, 2022. Picture taken March 7, 2022. REUTERS/Seun Sanni