Germany's favourite polar bear celebrated his first birthday at the Berlin Zoo by gobbling down a fish cake topped with a candle-shaped rolling pin.
Knut's keeper, Thomas Doerflein, brought out the cake loaded with fish, fruit, vegetables and rice on a bed of lettuce.
As soon as it was placed on the ground in his pen, Knut bolted out of his cave to devour it. After finishing the cake he began chewing on the "candle."
Rejected by his mother Tosca before being controversially raised by zookeepers, Knut has grown from a 800-gram (1.8 pounds) ball of fur to a gangly bear weighing more than 100 kg (220 pounds). Scroll down for more ...
After finishing his birthday cake, Knut began to eat the candle-shaped rolling pin
Many happy returns: Crowds gather at the Berlin Zoo to join the celebration
"I'm here because of Knuty's birthday," said Jasmin Sambrano of Caracas, Venezuela, one of a horde of animal lovers who came to help Knut celebrate his big day.
"I'm here ... especially for the birthday of our very beloved Knut."
After an animal rights campaigner criticised the zoo's decision to raise Knut by hand in comments interpreted as a call for the bear to be put down, German media and public opinion rallied behind the photogenic bear.
Transformation: Knut has grown from a cuddly cub to his current weight of more than 100 kg (220 pounds)
After his first public appearances with keeper Doerflein in March, Knut mania spawned a CD, a book and hour-long queues at the zoo as visitors from around the world came to see him.
Within a year, officials expect to make plans for him to leave Berlin to mate. Neither of the city's two zoos have a female bear the right age for Knut.
Germany's favourite polar bear celebrates his first birthday at the Berlin Zoo | the Daily Mail