Polar bear cubs have Viennese in a whirl!

After months of being nurtured by their mother, Vienna Zoo's youngest attractions have appeared in public. Visitors got to view the playful pair of polar bear cubs for the first time since their birth in late November.

Their emergence means they're beginning to break free from their mother's protection.
 
Zoo officials have yet to name the cubs, and say they'll probably end up at another European zoo when they reach maturity.