The polar bear causing an internet sensation

Siku, the polar bear, has become a worldwide hit after a video of him was uploaded to YouTube.

The little cub, from the Scandinavian Wildlife Park of Djursland's, is just 32 days old and weighs 3,200 grams. 

He is currently being bottle fed by keepers after his mother struggled to produce enough milk for him.

Catch the cute cub in action below.