Stones collected and categorised by shape (fish) are seen at the home workshop of Luigi Lineri in Zevio, near Verona, Italy, June 10, 2016. Luigi Lineri's home workshop is covered in stones – tens of thousands of them. They resemble animal heads, human faces and other forms, and the artist and poet believes may have been shaped by prehistoric humans. (Photo by Alessandro Bianchi/Reuters)

Sea lions wait on the deck of the boat before being released in front of Palomino island, in Callao, Peru September 12, 2015. Four young sea lions returned to the wild after being rescued by marine biologists and treated for various illnesses. The sea lions are survivors of various illnesses which they contracted off the coast of Peru caused by the elevated temperatures in the water because of the El Nino phenomenon, according to Carlos Yaipen, Director of Animal Science and Well-being Organization (ORCA). (Photo by Mariana Bazo/Reuters)

A hyena eyes a herd of zebra at Lake Nakuru National Park, Kenya, August 19, 2015. The Park is home to some of the world's most majestic wildlife including lions, rhinos, zebras and flamingos. The scenery is stunning, from forests of acacia trees to animals congregating at the shores to drink. UNESCO says that with rapid population growth nearby, the area is under "considerable threat from surrounding pressures," particularly deforestation, a contributing factor in floods. (Photo by Joe Penney/Reuters)

A woman holds a hedgehog at the Harry hedgehog cafe in Tokyo, Japan, April 5, 2016. In a new animal-themed cafe, 20 to 30 hedgehogs of different breeds scrabble and snooze in glass tanks in Tokyo's Roppongi entertainment district. Customers have been queuing to play with the prickly mammals, which have long been sold in Japan as pets. The cafe's name Harry alludes to the Japanese word for hedgehog, harinezumi. (Photo by Thomas Peter/Reuters)

Aquarium visitors attend a dinner party in an underwater tunnel in Tianjin, China on September 15, 2016. Tianjin Haichang Polar Ocean World opened in the city of Tianjin, southeast of Beijing, in 2010. It gives visitors a chance to see more than 150 large animals from the Arctic and Antarctic regions, including polar bears. (Photo by Feature China/Barcroft Images)

A woman in a maid costume serves customers the Maid Coffee Shop in the Akihabara District October 23, 2005 in Tokyo, Japan. The Akihabara District is known as the world's biggest electrical appliance and equipment town, but recently this area has also became famous for having many shops delivering products and healing services by employees in the costume of maids and animation characters. Some popular shops include coffee, hair salon and massage shops where females deliver services dressed as maids. (Photo by Koichi Kamoshida/Getty Images)

Two rescued pangolins sit in a basket during a news conference in Bangkok on June 7, 2012. Thai customs rescued 110 pangolins worth about $35,500 that they say were to be sold outside the country as exotic food. The animals, hidden in a pickup truck, were seized at a customs checkpoint in Prachuap Khiri Khan province, south of Bangkok. (Photo by Sakchai Lalit/Associated Press)