Britain's Queen Elizabeth visits the new Asiatic lion enclosure at London Zoo, March 17, 2016. REUTERS/Arthur Edwards/Pool TPX IMAGES OF THE DAY
A zookeeper interacts with camels during the annual stocktake at ZSL London Zoo in London, Britain, January 2, 2020. REUTERS/Henry Nicholls TPX IMAGES OF THE DAY
A visitor looks at penguins swimming, at the London Zoo on the first day of its reopening since lockdown restrictions ease, during the spread of the coronavirus (COVID-19) disease in London, Britain, June 15, 2020. REUTERS/Toby Melville TPX IMAGES OF THE DAY
Lemurs eat food placed in Christmas season props at London Zoo in London, Britain, December 16, 2019. REUTERS/Toby Melville TPX IMAGES OF THE DAY
Bhanu, the Asiatic lion reacts during feeding time ahead of World Lion Day, at London Zoo in London, Britain, August 7, 2019. REUTERS/Toby Melville
Bhanu, an Asiatic lion, rolls in leaves scented with cardamom, cinnamon and clove in his enclosure at London Zoo, London, Britain, October 18, 2018. REUTERS/Peter Nicholls TPX IMAGES OF THE DAY
A black-capped squirrel monkey looks into a broadcast crew's camera and lens at London Zoo in London, Britain, June 27, 2018. REUTERS/Toby Melville TPX IMAGES OF THE DAY
A Humboldt penguin jump off scales during the annual weight-in at London Zoo in London, Britain August 24, 2016. REUTERS/Neil Hall
Humboldt penguins swim in their pool during the stock take at London Zoo in London, Britain January 4, 2016. REUTERS/Stefan Wermuth
Gorillas sit next to a ruler during a photocall for the annual weigh-in at London Zoo in London, Britain August 24, 2017. REUTERS/Neil Hall TPX IMAGES OF THE DAY
A waxy monkey tree frog is weighed in a measuring device during a photocall to publicize the annual measuring of all the animals at the London Zoo, in central London August 21 2013. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SOCIETY ANIMALS ENVIRONMENT)
A gentoo penguin dives into the water in its enclosure during a media presentation at the Sea Life London Aquarium May 18, 2011. The gentoo penguins which are native to Antartica, were acquired from Edinburgh Zoo and are a new attraction at the aquarium. REUTERS/Andrew Winning (BRITAIN - Tags: ANIMALS ENVIRONMENT SOCIETY IMAGES OF THE DAY) BEST QUALITY AVAILABLE
A ring-tailed coati hunts for a treat hidden inside a Christmas cracker in its enclosure at the London Zoo, in London December 17, 2009. REUTERS/Stefan Wermuth (BRITAIN - Tags: ANIMALS SOCIETY)
Abi the lioness licks one of her two ten-week-old Asiatic Lion cubs in their outside enclosure at London Zoo August 13, 2009. The two cubs are the first to be born at the zoo for over ten years to their mother Abi who was the last cub to be born at the zoo in 1999. REUTERS/Stephen Hird (BRITAIN ANIMALS ENVIRONMENT SOCIETY IMAGES OF THE DAY)
A family of otters are pictured during London Zoo's annual stocktake January 8, 2009. REUTERS/Andrew Winning (BRITAIN)
Crackers the giraffe attempts to lick a lolly made from frozen fruit and
fruit juices in her enclosure at London Zoo, August 6, 2003. The highest
temperature of the year was expected to be topped for the second day in a
row today as the European heatwave continued. NO RIGHTS CLEARANCES OR PERMISSIONS ARE REQUIRED FOR THIS IMAGE REUTERS/Matt
Dunham PP03080024
MD
Melati (L), a four year old Sumatran Tiger and Jae Jae, her five year old male companion, face off in their new 2,500 square meter enclosure at London Zoo March 22, 2013. The zoo hopes that Melati and Jae Jae, will breed in captivity. REUTERS/Andrew Winning (BRITAIN - Tags: ANIMALS ENVIRONMENT SOCIETY)
Zoo-keeper Alison Westlake poses with Meerkats during the stock take at London Zoo in London January 4, 2012. The annual number count of over 16 000 mammals, birds, fish, reptiles, invertebrates and amphibians is a compulsory part of the zoo license renewal. REUTERS/Toby Melville (BRITAIN - Tags: ANIMALS SOCIETY)
Zookeeper Sarah Dempsey holds a Pueblan Milk Snake as she prepares to measure it during a photocall to publicize London Zoo's annual measurement of all it's animals, in central London, August 25, 2011. REUTERS/Andrew Winning (BRITAIN - Tags: SOCIETY ANIMALS ENVIRONMENT)
Zoo keeper Rowena Fisher poses for photographers with a group of penguins, with a Rockhopper penguin next to her, during a photo-call to mark the opening of the new London Zoo penguin pool and beach, in London May 26, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: ANIMALS ENVIRONMENT)
An Asiatic lion reacts during feeding time ahead of World Lion Day, at London Zoo, in London, Britain, August 7, 2020. REUTERS/John Sibley
Two Bolivian black-capped squirrel monkeys play with a ball ahead of England's first World Cup soccer game at London Zoo June 8, 2006. England are due to play Paraguay in their first game on Saturday. WORLD CUP 2006 PREVIEW REUTERS/Luke MacGregor (BRITAIN)
A sign is seen on the wall at the London Zoo on the first day of its reopening since lockdown restrictions ease, during the spread of the coronavirus (COVID-19) disease in London, Britain, June 15, 2020. REUTERS/Toby Melville
Gorilla Mjukuu plays with rainbow bunting that is hung in celebration in the gorilla enclosure ahead of the reopening of London Zoo, after an extended lockdown due to the spread of the coronavirus disease (COVID-19) in London, Britain, June 14, 2020. REUTERS/Hannah McKay
Heidi the lion is seen during the annual stocktake at ZSL London Zoo in London, Britain, January 2, 2020. REUTERS/Henry Nicholls
Bhanu the lion is seen during the annual stocktake at ZSL London Zoo in London, Britain, January 2, 2020. REUTERS/Henry Nicholls
Asim, a Sumatran tiger, prepares to eat food placed in Christmas season props at London Zoo in London, Britain, December 16, 2019. REUTERS/Toby Melville
An Asiatic lioness eats meat during feeding time ahead of World Lion Day, at London Zoo in London, Britain, August 7, 2019. REUTERS/Toby Melville
A zoo keeper carries a pelican before it is transported to Buckingham Palace in London to live in St James's Park, in Prague, Czech Republic, May 30, 2019. REUTERS/David W Cerny
Black capped squirrel monkeys are fed treats from a papier-mache Easter egg during a photo-call at ZSL London Zoo in London, Britain, April 18, 2019. REUTERS/Peter Nicholls
Jae Jae, a Sumatran Tiger examines a noticeboard during an event to publicise the annual stocktake at London Zoo in London, Britain, January 3, 2019. REUTERS/Toby Melville
Zookeeper Dave Clarke poses with two Giant Flower Beatles during an event to publicise the annual stocktake at London Zoo in London, Britain, January 3, 2019. REUTERS/Toby Melville
Kumbuka, a silverback gorilla, searches for food in an advent calendar as animals are given meals styled along a Christmas theme in London, Britain, December 20, 2018. REUTERS/Toby Melville
Gorillas interact with pumpkins during a photocall at London Zoo in London, Britain, October 25, 2018. REUTERS/Henry Nicholls
A squirrel monkey interacts with a pumpkin during a photocall at London Zoo in London, Britain, October 25, 2018. REUTERS/Henry Nicholls
Bhanu, an Asiatic lion, rolls in leaves scented with cardamom, cinnamon and clove in his enclosure at London Zoo, London, Britain, October 18, 2018. REUTERS/Peter Nicholls
Penguins are weighed by a zookeeper during the annual weigh-in at ZSL London Zoo in London, Britain August 23, 2018. REUTERS/Henry Nicholls
Squirrel monkeys are photographed by media during the annual weigh-in at ZSL London Zoo in London, Britain August 23, 2018. REUTERS/Henry Nicholls
A zookeeper weighs Meerkats during the annual weigh-in at ZSL London Zoo in London, Britain August 23, 2018. REUTERS/Henry Nicholls
Lowland gorilla, ' 'Effie' eats iced treats with nuts and berries as her son 'Gernot' looks on during the hot weather at London Zoo in London, Britain, June 27, 2018. REUTERS/Toby Melville
A ring-tailed lemur eats food contained within a papier mache egg at London Zoo in London, Britain, March 29, 2018. REUTERS/Toby Melville
A Komodo dragon, named Ganas, attempts to eat a raw egg at London Zoo in London, Britain, March 29, 2018. REUTERS/Toby Melville
A keeper stands next to a llama during the Annual Stocktake at ZSL London Zoo in London, Britain February 7, 2018. REUTERS/Tom Jacobs
Penguins are counted during the Annual Stocktake at ZSL London Zoo in London, Britain February 7, 2018. REUTERS/Tom Jacobs
Lions are thrown food during the Annual Stocktake at ZSL London Zoo in London, Britain February 7, 2018. REUTERS/Tom Jacobs
A Lioness opens up her Christmas present in her enclosure at London Zoo, in London, Britain, December 14, 2017. REUTERS/Clodagh Kilcoyne
Gorilla sits next to a ruler during a photocall for the annual weigh-in at London Zoo in London, Britain August 24, 2017. REUTERS/Neil Hall
A worker cleans the windows of a penguin tank during a photocall for the annual weigh-in at London Zoo in London, Britain August 24, 2017. REUTERS/Neil Hall
A bearded pig is hosed down with water at London Zoo in London, Britain August 16, 2016. REUTERS/Neil Hall
A squirrel monkey eats berries frozen in a block of ice at London Zoo in London, Britain August 16, 2016. REUTERS/Neil Hall
An Asiatic lioness looks towards Britain's Queen Elizabeth as she and Prince Philip officially opened the "Land of the Lions" enclosure at London Zoo in London, Britain, March 17, 2016. REUTERS/Toby Melville
Keeper Jamie Mitchell poses with a Mexican Red-Kneed Tarantula during the stock take at London Zoo in London, Britain January 4, 2016. REUTERS/Stefan Wermuth
Keeper Luke Harding poses with a Jackson's chameleon during the stock take at London Zoo in London, Britain January 4, 2016. REUTERS/Stefan Wermuth
Children look at Humboldt penguins swim in their pool during the stock take at London Zoo in London, Britain January 4, 2016. REUTERS/Stefan Wermuth
Sumatran tiger cub triplets watch their mother Melati (not shown) approaches a gift left for them to celebrate their first birthday in their enclosure at London Zoo in London, February 4, 2015. The Zoo left gifts for the cubs in their enclosure, but they were afraid to approach the boxes, leaving their mother to enjoy their contents. REUTERS/Stefan Wermuth (BRITAIN - Tags: ANIMALS ENVIRONMENT)
A Squirrel Monkey peers into a photographer's lens during a photocall at London Zoo in central London August 21, 2014. The annual weigh-in, which includes waist and height measurements, is conducted for the general wellbeing of the animals, and to help detect pregnancies in endangered species, as part of the Zoo's international breeding programmes. REUTERS/Toby Melville (BRITAIN - Tags: ANIMALS ENVIRONMENT)
Tian Tian the female giant panda sits in her enclosure in Edinburgh zoo, Scotland August 9, 2013. A giant panda at Edinburgh Zoo is showing signs of pregnancy and could give birth within weeks to what would be the first cub from the rare species born in Britain, officials said. The news was treated as a major story by British media and members of the public immediately drew comparisons with the recent frenzy over the birth of royal baby Prince George at St Mary's Hospital in London on July 22. REUTERS/Russell Cheyne (BRITAIN - Tags: ENVIRONMENT ANIMALS)
Zoo keeper Grant Kother poses with a Diamond Python during the annual stock take at London Zoo January 3, 2013. The compulsory count of more than 17,500 animals is noted annually as part of the zoo's licence, and the information is logged with the International Species Information System (ISIS), used for managing international breeding programs of endangered animals. REUTERS/Luke MacGregor (BRITAIN - Tags: ANIMALS ENVIRONMENT)
Maggie, a giraffe plays with a carved pumpkin during a Halloween-themed media event at the London Zoo October 30, 2012. REUTERS/Suzanne Plunkett (BRITAIN - Tags: ANIMALS SOCIETY)
An Humboldt Penguin dives off a board as a heron stands in the background at London Zoo in London March 29, 2012. The diving board has been installed to coincide with 'Inspired by 2012' London Olympic programme. REUTERS/Toby Melville (BRITAIN - Tags: ENVIRONMENT SPORT OLYMPICS ANIMALS)
Two young girls watch a raft of penguins swim during the opening of the new London Zoo penguin pool and beach in London May 26, 2011. REUTERS/Suzanne Plunkett (BRITAIN - Tags: ANIMALS ENVIRONMENT)
Pelicans sit on a frosty bank in London Zoo as temperatures drop in London January 5, 2010. REUTERS/Kevin Coombs (BRITAIN - Tags: ANIMALS ENVIRONMENT SOCIETY)
Seventeen-day-old red river hoglets are seen feeding with their mother Bahiti (L) at the London Zoo in central London, August 23, 2007. Whilst native to the swamps of central and west Africa, the hoglets have a typical life span of twenty years and will shortly lose their camouflage colours to their more distinctive reddish brown coat. REUTERS/Alessia Pierdomenico (BRITAIN)
A gorilla sits in it's enclosure at London Zoo February 16, 2008. REUTERS/Kevin Coombs (BRITAIN)
Zaire, a female gorilla, eats treats from a Christmas stocking at the London Zoo's Gorilla Kingdom enclosure in central London December 18, 2007. Picture taken through a glass screen. REUTERS/Alessia Pierdomenico (BRITAIN)
A female jungle nymph rests on bug keeper Don McFarlane's clipboard while he takes notes during the annual stock take at London Zoo, Regents Park in London January 13, 2006. The yearly head count is a legally binding register of over six hundred species housed at the zoo, many of which are highly endangered.
Coatis are taken for a walk to be counted in the annual stock take at London Zoo, Regents Park in London January 13, 2006. The yearly head count is a legally binding register of over six hundred species housed at the zoo, many of which are highly endangered.
Abi the Asiatic lioness hits a 'Christmas pudding' decorated ball at London Zoo in central London, December 22, 2004. The decorated ball serves a practical purpose as part of the animal's enrichment programmes, according to the zoo, as various seasonal decorations and food-based Christmas presents were handed by keepers to animals ahead of December 25. REUTERS/Toby Melville TM/MD
Head keeper Linda Walker counts Alpaca goats at London Zoo during the
annual animal stock take, January 2, 2003. The annual event provides an
essential record of the more than 600 species kept at the zoo, from
invertebrates to mammals and fish. REUTERS/Stephen Hird
SH/ASA
Penguin chicks 19-day old Becks (L) and 22-day old Posh pose for
photographers at London Zoo, March 28, 2002. The chicks, named after
England soccer captain David Beckham and his pop star wife Victoria,
are Black-Footed penguins and will develop their waterproof feathers
when they are two and a half months old. NO RIGHTS CLEARANCES OR PERMISSIONS ARE REQUIRED FOR THIS IMAGE REUTERS/Dan Chung
DC/ASA
Two Asiatic bears play in New Delhi Zoo December 14, 2000. In a report released this week, the London-based World Society for the Protection of Animals (WSPA), said bears living in cramped cages or metal crates on 44 farms in China, Vietnam and the Korean peninsula were found to be suffering from sores bone deformities, bad food, poor hygiene and poor veterinary care.
JSG/DL
Two female Asian lion cubs play with their father Kamal at London Zoo June 16. The cubs, who met Kamal for the first time today, are part of a European Breeding programme which is co-ordinated by London Zoo.
KD/NS/
Indian Elephants try to keep cool in their pool at London Zoo as temperatures soar to the highest this summer August 8. Britain has suffered one of the coldest and wettest summers in recorded history.
**DIGITAL IMAGE**
A keeper struggles to keep three eight-week-old Snow Leopard cubs under control at Colchester Zoo August 27