The Most Adorable Zoo Born Animals Baby polar bear, Siku, who appears on the cover of the new book, ZooBorns The Next Generation: Newer, Cuter, More Exotic Animals from the World's Zoos and Aquariums. Born Nov. 22, 2011, Siku lives in Scandinavian Wildlife Park in Denmark. Polar bears are considered a vulnerable species by the International Union for Conservation of Nature. Soren Koch / Hilmer & Koch Nature Photography