Snow ... Gus the polar bear relaxes in Central Park Zoo in New York


Hi, mum ... Winner the cub kisses his mother in Blijdorp Zoo in Rotterdam


Hello! .... Milwaukee Country's polar bear Zero stretches after waking up


It's this cold ... Antonia enjoys a cold wave at Germany's Ruhrzoo


Are you comfy? ... Uslada acts as a pillow for her cub at St Petersburg Zoo in Russia


Bear-stroke ... Lloyd goes for a swim in front of fans at Bremerhaven Zoo in Germany


Little ones ... a mother lies next to her young cubs at Schoenbrunn Zoo in Vienna


Bubbles ... Coeur the polar bear goes swimming at Sea World in Queensland


Duo ... Russian cubs Lia and Lutik walk in sync at Sea World in Queensland


Hugs! ... a mother and her cub bond at Moscow Zoo in Russia