Knut, the world's most famous polar bear, turned two last Friday, but this year there was no celebration - and the animal-kingdom superstar might need to start looking for new digs.

According to reports in the German press, Berlin's zoo is looking to sell the famous bear to another facility, possibly in Sweden, in 2009.

Now weighing in at almost 450 lbs., Knut is too big for his current enclosure, zoo officials say. And zookeeper Heiner Klös, recently told the German magazine Der Spiegel that Knut needs to be treated like the rest of his neighbors.