A young anoa, also known as midget buffalo, named Tycoon runs around at the Zoo in Berlin, Germany, on November 9, 2012. (Photo by Maurizio Gambarini/EPA)

A polar bear plays with a pylon during celebrations marking its first birthday in an enclosure at Tierpark Hellabrunn zoo in Munich December 9, 2014. (Photo by Michaela Rehle/Reuters)

A female Indian rhinoceros called Maruska eats a vegetable birthday cake on her first birthday celebration at the Plzen Zoo on February 3, 2015 in Plzen, Czech Republic. (Photo by Ladislav Nemec/Isifa)

A Kamchatka Brown Bear cub eats frozen fruits during a Christmas feeding session at Hagenbecks zoo in Hamburg, northern Germany on December 5, 2014. (Photo by Fabian Bimmer/Reuters)

A brown bear waits for food at the zoo in Madrid, Spain on July 30, 2016. (Photo by Jorge Sanz/Pacific Press/SIPA Press/Rex Features/Shutterstock)

View of a raccoon dog or Tanuki (Nyctereutes procyonoides) at the Chapultpec Zoo in Mexico City on August 06, 2015. This species is native from Japan and China. (Photo by Alfredo Estrella/AFP Photo)

A baby otter has its first health checkup at Chester zoo, England on May 2, 2018. It was among five pups being weighed and microchipped. (Photo by Peter Byrne/PA Wire)

Three-year-old orangutan from Sumatra, Berani, is pictured at the Pairi Daiza wildlife park, zoo and botanical garden in Brugelette, Belgium on August 2, 2019. (Photo by Yves Herman/Reuters)