A lion yawns early morning at the Nairobi National Park in this March 11, 2013 file photo. Two lions were spotted close to a highway in the Kenyan capital on Monday, the second time this month that lions have strayed from a wildlife sanctuary on Nairobi's outskirts and entered the city of some 3 million people. (Photo by Marko Djurica/Reuters)





Sparrows perch on a car's windshield during a rain shower in Kiev, Ukraine, March 1, 2016. (Photo by Gleb Garanich/Reuters)





Red Panda cubs Mandu (L) and Keta, who were born in December last year, are held by their keepers as they prepare to be vacinated during their first public appearance at Melbourne Zoo in Australia March 2, 2016. (Photo by Julian Smith/Reuters/AAP)





A mountain hare runs across the snow in the Cairngorm mountains near Glenshee in Scotland, Britain March 2, 2016. (Photo by Russell Cheyne/Reuters)





A baby of giant anteater is presented at its enclosure at the zoo in Prague, Czech Republic, Wednesday, March 2, 2016. The baby was born on Jan. 20, 2016. For Prague Zoo it is the first baby anteater born in its breeding history. (Photo by Petr David Josek/AP Photo)





A zookeeper holds a baby giant anteater in its enclosure at Prague Zoo, Czech Republic, March 2, 2016. The baby giant anteater was born on January 20, 2016. (Photo by David W. Cerny/Reuters)





A zookeeper holds a baby giant anteater in its enclosure at Prague Zoo, Czech Republic, March 2, 2016. (Photo by David W. Cerny/Reuters)





A zookeeper holds a baby giant anteater in its enclosure at Prague Zoo, Czech Republic, March 2, 2016. (Photo by David W. Cerny/Reuters)





An Indian gharial crocodile swims in a pool at Prague Zoo, Czech Republic, March 2, 2016. (Photo by David W. Cerny/Reuters)





Veterinary Connie Tien, examines a rescued baby howler monkey at the Costa Rica Animal Rescue Center in Turrucares, Costa Rica March 2, 2016. Mauricio Jimenez, coordinator of the Wild Animals hospital, said the drought in the northern region of the country is killing and affecting wild animals. (Photo by Juan Carlos Ulate/Reuters)





A panda named Lebao, which means pleasant treasure, is seen during a welcoming ceremony for a pair of giant pandas coming from China, at a cargo terminal of the Incheon International Airport in Incheon, South Korea, March 3, 2016. (Photo by Ha Sa-hyun/Reuters/Yonhap)





A keeper feeds panda named Lebao, which means pleasant treasure, during a welcoming ceremony for a pair of giant pandas coming from China, at a cargo terminal of the Incheon International Airport, in Incheon, South Korea, March 3, 2016. (Photo by Ha Sa-hyun/Reuters/Yonhap)





A South Korean handler feeds a panda named Le Bao, a three-year-old male, during a welcoming ceremony for a pair of giant pandas from China’s Sichuan province at a cargo terminal of the Incheon International Airport in Incheon, South Korea, Thursday, March 3, 2016. A pair of giant pandas arrived in South Korea following an agenda about panda research cooperation in a meeting between Chinese President Xi Jinping and South Korean President Park Geun-hye in 2014. (Photo by Lee Jin-man/AP Photo)





A grizzly bear roams through the Hayden Valley in Yellowstone National Park in Wyoming in this May 18, 2014 file photo. The U.S. Fish and Wildlife Service proposed on March 3, 2016 stripping Endangered Species Act protections from the grizzly bear in and around Yellowstone National Park, saying the animal's numbers have rebounded sufficiently in recent decades. (Photo by Jim Urquhart/Reuters)





A worker feeds a crocodile named “Shaquille” at an enclosure at the Malabon Zoo in Manila on March 3, 2016, as the world celebrates 3rd World Wildlife Day. The day began in Florence, Italy, in 1931 at a convention of ecologists, whose intention was to highlight the plight of endangered species and October 4 was chosen as the date because it is the feast day of nature lover Francis of Assisi, the patron saint of animals and the environment. (Photo by Noel Celis/AFP Photo)





A polar bear named Gerda and a polar bear cub playing in the Novosibirsk Zoo on February 27, 2016. (Photo by Kirill Kukhmar/TASS/Barcroft Media)





A photo made available 29 February 2016 shows an orangutan leached to a bench waiting for visitors to take a photo at a zoo in Bangkok, Thailand, 28 February 2016. Orangutans are an endangered species divided in two sub-species, the Sumatran and the Bornean orangutan differing slightly both in appearance and behavior. According to conservation groups, the world orang-utan population has declined from 230,000 in the early 1900's to about 45,000 orangutans living in Borneo and Sumatra these days. The current decline rate has accelerated as only a decade ago there were more than 60,000 orangutans, which leads experts to believe that in less than 25 years there could be no orang-utans left in the wild. (Photo by Diego Azubel/EPA)





Sheep are covered with snow on a meadow near Sieversdorf, Brandenburg, Germany, 01 March 2016. March 01 marks the beginning of meteorological spring in the northern hemisphere. (Photo by Patrick Pleul/EPA)





Nora Lifschitz treats a wounded Egyptian fruit bat in her apartment in Tel Aviv, Israel, 29 February 2016. Nora Lifschitz, 28, an animal rights activist who independently hospitalizes Egyptian fruit bats in her apartment, has treated and released almost 70 bats back into nature. (Photo by Abir Sultan/EPA)





Nora Lifschitz treats a wounded Egyptian fruit bat in her apartment in Tel Aviv, Israel, 29 February 2016. (Photo by Abir Sultan/EPA)





Nora Lifschitz holds a wounded Egyptian fruit bat in her apartment in Tel Aviv, Israel, 29 February 2016. (Photo by Abir Sultan/EPA)





Michael Engelmann, director of the Koethen Zoo, holds up kangaroo joey “Muffin” in Koethen, Germany, 03 March 2016. The ten-week-old Bennett's tree-kangaroo fell from its mother's pouch in mid-February in the Koethen Zoo. Because it can't return, its now growing up in a pillowcase as a replacement for a maternal pouch. (Photo by Sebastian Willnow/EPA)





A visitor plays with a ring-tailed lemur (Lemur catta) at Zveryushki, Moscow's largest petting zoo, in Vegas Shopping and Leisure Centre at Kashirskoye Shosse Street on February 28, 2016. (Photo by Artyom Geodakyan/TASS via ZUMA Press)





Gentoo penguins move pebbles to their nest after keepers placed them in a large heart-shape to celebrate the start of the gentoo penguin breeding season, at Penguin Rock at Edinburgh Zoo, UK on March 2, 2016. (Photo by Andrew Milligan/PA Wire via ZUMA Press)





Filipino students feed the forty-two year old Asian elephant Maali at Manila Zoo on World Wildlife Day on March 3, 2016. The United Nations declared March 3 as global wildlife awareness day, and this year’s theme “The future of wildlife in our hands” focused on Asian and African elephants that has become victims of wildlife trafficking. The UN hoped to see more commitment from countries worldwide to stop such abuse. (Photo by Marlo Cueto/Pacific Press via ZUMA Wire)





An Elephant is seen swimming in a river near the National Elephant Conservation Centre on March 1, 2016 in Kuala Gandah, Malaysia. Almost 1,200 wild Asian Elephants, also known as Elephus Maximus, are left in Malaysia and this is the only conservation centre set up to relocate these displaced pachyderms. The elephants here have been rescued from all over Peninsula Malaysia, providing them a safe sanctuary in the wild, according to World Wildlife Foundation, the increasing human population in Asia has affected the elephant's dense, but diminishing forest habitat. (Photo by Mohd Samsul Mohd Said/Getty Images)





Zoo owner Manny Tangco (C) presents a cake to a female orangutan named “Marimar” at the Malabon Zoo in Manila on March 3, 2016, as the world celebrates 3rd World Wildlife Day. The day began in Florence, Italy, in 1931 at a convention of ecologists, whose intention was to highlight the plight of endangered species and October 4 was chosen as the date because it is the feast day of nature lover Francis of Assisi, the patron saint of animals and the environment. (Photo by Noel Celis/AFP Photo)





Keeper Lucy Truelson (L) washes Asian elephant bull Bong Su as it lies against the barrier in its enclosure at Melbourne Zoo in Melbourne, Australia, 03 March 2016. According to the zoo, Bong Su, the largest animal in Australia, showed media its morning bath time routine ahead of the World Environment Day. (Photo by Tracey Nearmy/EPA)





Zoo keeper Lucy Truelson washes Bong Su's tusk, an Asian elephant bull, in his enclosure at the Melbourne Zoo in Melbourne, Australia, 03 March 2016. (Photo by Tracey Nearmy/EPA)





A zoo keeper hand feeds fruit to an Asian elephant at Melbourne Zoo in Melbourne, Australia, 03 March 2016. (Photo by Tracey Nearmy/EPA)





Alice the Zwartbles ewe has become the proud mum of twins Tweedle Dum and Tweedle Dee at Checkendon, Oxfordshire, Britain on March 1, 2106. A week ago the terrible two were born – bearing the distinctive white face and black body typical of their Dutch breed. (Photo by David Hartley/Rex Shutterstock via ZUMA Press)





A double-crested cormorant attempts to swallow a large fish it caught in a water feature near the 10th tee at the Cadillac Championship golf tournament, Wednesday, March 2, 2016, in Doral, Fla. (Photo by Wilfredo Lee/AP Photo)





A mother monkey looks for insects in her baby's head on the occasion of World Wildlife Day celebration in zoological park, Guwahati, Assam state, India, March 3, 2016. (Photo by EPA/Stringer)





Two seals play in their enclosure at the zoo in Prague, Czech Republic, 02 March 2016. (Photo by Filip Singer/EPA)





Seals play in their enclosure at Prague Zoo, Czech Republic, March 2, 2016. (Photo by David W. Cerny/Reuters)





Wan Nung, a Prairie Dog rodent native to North America, pauses while being chased by her owner during a pet show event called “Prairie's Got Talent”, at Mahidol University, Bangkok, Thailand, February 27, 2016. Pet shows, once filled with dogs and cats, nowadays showcase Thai people's love for exotic, wilder species. Among the favorites of the exotic pets are Prairie Dog rodents from North America, snakes, and many species of lizards. (Photo by Barbara Walton/EPA)





A young spectacled bear sniffs its goodbye present in the zoo in Frankfurt am Main, Germany, 03 March 2016. The young spectacled bear brothers “Tupa” and “Sonco” are moving to the Noah's Ark Zoo Farm in England in mid-March as recommended by the European Endangered Species Programme (EEP). (Photo by Alexander Heinl/EPA)





A swan sticks its head under its feathers on the banks of the river Rhine in Mainz, Germany, Wednesday, March 2 2016. (Photo by Frank Rumpenhorst/DPA via AP Photo)





An African elephants throws mud onto himself at the Mpala Research Center and Wildlife Foundation, near Rumuruti, Laikipia District, Kenya, on January 31, 2016. (Photo by Simon Maina/AFP Photo)





A Sri Lankan leopard is pictured at a zoo in Dehiwala near Colombo on March 3, 2016, on World Wildlife Day. (Photo by Ishara S. Kodikara/AFP Photo)





This photo taken on March 2, 2016 shows a flock of black-winged stilts (Himantopus himantopus) flying past a wetland at the Guandu Nature Park in Taipei. The birds in the past nest mostly in southern Taiwan, but they are gradually expanding to the north and in greater numbers. According to Guandu Nature Park in northern Taiwan, the black-winged stilt population has increased to at least 5,000 nowadays. (Photo by Sam Yeh/AFP Photo)





A Cornish Rex breed cat attends the Catsburg 2016 International Cats show in Moscow on March 5, 2016. (Photo by Dmitry Serebryakov/AFP Photo)





A sand gazelle is seen at the Arabian Oryx Sanctuary in Umm Al-Zamool, some 290 kilometres south of Abu Dhabi near the border with Oman and Saudi Arabia, on March 1, 2016. The sanctuary which is reserve for many different animals stretches over an estimated area of 8,900 square kilometres and currently hosts nearly 155 Arabian Oryx, which were reintroduced into the its natural habitat in the UAE in a five-year conservation plan launched by UAE's late ruler Sheikh Zayed bin Sultan Al Nahyan, after fears of their extinction. (Photo by Karim Sahib/AFP Photo)