. `` He 's doing well . '' Such growth is a testament to the dedicated care Siku is receiving . For the first three weeks , Vigh-Larsen fed the cub every two hours -- and still feeds him every three hours , meaning the keeper gets little sleep . In the new year , two other wildlife keepers will start to care for him , too , in shifts , making sure the cub is never alone during the first 12 months of his life . Siku 's popularity comes at a time when concern over the plight of polar bears is at an peak . Corporate giant Coca-Cola recently launched a campaign in conjunction with the World Wildlife Fund to raise awareness about the threat of climate change to polar bears ' Arctic habitat . And Vigh-Larsen is determined Siku -- whose name means `` sea ice '' in Greenlandic , an Eskimo language spoken in Greenland -- will thrive so he can play a role in highlighting the risk . Polar bears rely on sea ice in the Arctic to hunt . `` Siku is going to be an ambassador for polar bears , for global warming
-LRB- CNN -RRB- -- What 's white and black , and has people fawning all over ? Meet Siku , a polar bear cub born in captivity in Denmark . The cute cub is being reared by handlers at the Scandinavian Wildlife Park because his mother is n't producing the milk to feed him . Since his birth last month , Siku has become a Web star . He has his own page on the park 's website and he 's even on Facebook . Park director Frank Vigh-Larsen says he 's stunned by the cub 's rapid transformation into an Internet sensation . Video footage posted on YouTube of Siku bottle-feeding , rolling around and snoozing has been viewed more than 2 million times in six days , he told CNN , and the cub gained thousands of friends on Facebook within the space of a few hours . As of Wednesday , at 36 days old , Siku has just opened his eyes and weighs in at 4.2 kilograms -LRB- 9.2 pounds -RRB- , more than five times his initial weight , his handler said . `` He 's just a little solid cannonball , '' Vigh-Larsen said