An Indian Runner duck searches for food on a snow-covered meadow in Aitrang, southern Germany, Wednesday. April 19, 2017. (Photo by Karl-Josef Hildenbrand/DPA via AP Photo)





This picture taken on April 19, 2017, shows a blue lobster at Oceanopolis, a sea center in Brest, western of France. Scientists say that this specimen is extremely rare : one lobster among 2 or 3 millions is of blue color. This color is due to a genetic anomaly that develops an excess of crustacyanine, name of this blue pigment. (Photo by Fred Tanneau/AFP Photo)





A bird sits and pulls fur from the back of a deer in Bushy Park, in London, Britain April 16, 2017. (Photo by Peter Nicholls/Reuters)





A brown bear reacts to a quadrocopter drone launched by a visitor in a shelter for bears rescued from circuses and private restaurants of Ukraine, near Zhytomyr, some 150 km west of Kiev, on March 24, 2017. Tortured for years by human hands these mighty animals got a chance to start it all over again in a shelter near the city of Zhytomyr, in the northwest of the country. Opened in 2012 by international animal charity Four Paws, the rescue centre soon became one of the biggest sights of the region. (Photo by Sergei Supinsky/AFP Photo)





Brown bears play in a shelter run by the international animal charity “Four Paws” for bears rescued from circuses and private restaurants of Ukraine, near Zhytomyr, some 150 km west of Kiev, on March 24, 2017. (Photo by Sergei Supinsky/AFP Photo)





In this image provided by SeaWorld Parks & Entertainment orca Takara helps guide her newborn to the water's surface at SeaWorld San Antonio, Wednesday, April 19, 2017, in San Antonio. The company based in Orlando, Fla., announced the birth Wednesday. (Photo by Chris Gotshall/SeaWorld Parks & Entertainment via AP Photo)





A grey seal on rocks at sunrise by St Mary’s Lighthouse as they return to the island off Whitley Bay on the North East coast, April 21, 2017. (Photo by Owen Humphreys/ZUMA Press/PA Wire)





A horse stands under a solarium inside the horse rehabilitation centre in the village of Hrobice, Czech Republic, April 21, 2017. (Photo by David W. Cerny/Reuters)





Racka sheep are seen during celebrations for the start of the new grazing season in the Great Hungarian Plain in Hortobagy, Hungary, April 22, 2017. (Photo by Laszlo Balogh/Reuters)





Swans swim at a pond in the garden of castle Nymphenburg in Munich, southern Germany, on April 21, 2017. (Photo by Christof Stache/AFP Photo)





Cows stand on a snow-covered meadow near Unterthingen, Germany, Wednesday, April 19, 2017. Weather forecasts predict changeable weather with low tempertures. (Photo by Karl-Josef Hildenbrand/DPA via AP Photo)





An Elephant Seal pup sits in a pool at the Marine Mammal Center on April 20, 2017 in Sausalito, California. The Marine Mammal center has seen a surge in orphaned and injured Elephant Seal pups following heavy storm activity and rough surf that could have swept the young seals away from their mothers. The Marine Mammal Center currently has 113 elephant seals in rehabilitation compared to 100 this time last year. (Photo by Justin Sullivan/Getty Images)





Baby catfish are seen in a tank at a farm during a press tour for foreign journalists visiting the country for the 105th birth anniversary of the late leader Kim Il Sung on Monday, April 17, 2017, in Pyongyang, North Korea. (Photo by Wong Maye-E/AP Photo)





Mixed-breed dog Tino, a former street dog from Slovakia whose owner got him from a Frankfurt dog pound, jumps for a ball in Frankfurt, Germany, Wednesday, April 19, 2017. (Photo by Michael Probst/AP Photo)





A crow tries to get hold of the content of a cheese box that was left behind in Frankfurt, Germany, Friday, April 21, 2017. (Photo by Michael Probst/AP Photo)