Knut the polar bear was loved the world over and left millions devastated when he died of a brain seizure in March 2011.

But now his memory will live on thanks to a bronze statue that has been unveiled at his former home, Berlin Zoo.

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Knut captured the world's attention after he was abandoned by his mother

“Knut will stay in the hearts of many visitors, therefore this memorial will create something for future generations so that the unique nature of this animal celebrity will live on,” said the Friends of the Capital Zoos association.

Knut was abandoned by his mother as a cub and hand-reared by a keeper - and his story touched hearts everywhere.

His fame was such that he even appeared on the cover of Vanity Fair magazine and adorned German postage stamps.

After his death mourners openly wept by his enclosure with some even laying his favourite foods, such as fish and croissants, next to it.

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  • Late polar bear Knut is on display at the Natural History Museum in Berlin, Friday, Feb. 15, 2013. Adorable in life, still attracting admirers in death: Knut the polar bear's hide has been mounted on a polyurethane body and is going on display in a Berlin museum. The Natural History Museum on Friday unveiled the statue prepared by taxidermists featuring the famous Berlin Zoo bear's fur and claws, with the synthetic body and glass eyes. Knut was hand-raised after his mother rejected him. He rose to stardom in 2007 as a cuddly cub, appearing on magazine covers, in a film and on mountains of merchandise. He died in 2011 after suffering from encephalitis. (AP Photo/Markus Schreiber)

  • Late polar bear Knut is on display at the Natural History Museum in Berlin, Friday, Feb. 15, 2013. Adorable in life, still attracting admirers in death: Knut the polar bear's hide has been mounted on a polyurethane body and is going on display in a Berlin museum. The Natural History Museum on Friday unveiled the statue prepared by taxidermists featuring the famous Berlin Zoo bear's fur and claws, with the synthetic body and glass eyes. Knut was hand-raised after his mother rejected him. He rose to stardom in 2007 as a cuddly cub, appearing on magazine covers, in a film and on mountains of merchandise. He died in 2011 after suffering from encephalitis. (AP Photo/Markus Schreiber)

  • Late polar bear Knut is on display at the Natural History Museum in Berlin, Friday, Feb. 15, 2013. Adorable in life, still attracting admirers in death: Knut the polar bear's hide has been mounted on a polyurethane body and is going on display in a Berlin museum. The Natural History Museum on Friday unveiled the statue prepared by taxidermists featuring the famous Berlin Zoo bear's fur and claws, with the synthetic body and glass eyes. Knut was hand-raised after his mother rejected him. He rose to stardom in 2007 as a cuddly cub, appearing on magazine covers, in a film and on mountains of merchandise. He died in 2011 after suffering from encephalitis. (AP Photo/Markus Schreiber)

  • Late polar bear Knut is on display at the Natural History Museum in Berlin, Friday, Feb. 15, 2013. Adorable in life, still attracting admirers in death: Knut the polar bear's hide has been mounted on a polyurethane body and is going on display in a Berlin museum. The Natural History Museum on Friday unveiled the statue prepared by taxidermists featuring the famous Berlin Zoo bear's fur and claws, with the synthetic body and glass eyes. Knut was hand-raised after his mother rejected him. He rose to stardom in 2007 as a cuddly cub, appearing on magazine covers, in a film and on mountains of merchandise. He died in 2011 after suffering from encephalitis. (AP Photo/Markus Schreiber)

  • Late polar bear Knut is on display at the Natural History Museum in Berlin, Friday, Feb. 15, 2013. Adorable in life, still attracting admirers in death: Knut the polar bear's hide has been mounted on a polyurethane body and is going on display in a Berlin museum. The Natural History Museum on Friday unveiled the statue prepared by taxidermists featuring the famous Berlin Zoo bear's fur and claws, with the synthetic body and glass eyes. Knut was hand-raised after his mother rejected him. He rose to stardom in 2007 as a cuddly cub, appearing on magazine covers, in a film and on mountains of merchandise. He died in 2011 after suffering from encephalitis. (AP Photo/Markus Schreiber)

  • GERMANY-ANIMAL-POLAR BEAR-KNUT-SCULPTURE

    A person holds a photograph showing animal keeper Thomas Doerflein with polar bear Knut in front of the just unveiled sculpture 'Knut The Dreamer' at the zoo in Berlin on October 24, 2012. Knut, who died suddenly aged four from a suspected brain seizure in 2011, had shot to fame as an ueber-sweet cub after being abandoned by his mother and reared by hand. AFP PHOTO / JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)

  • GERMANY-ANIMAL-POLAR BEAR-KNUT-SCULPTURE

    A photograph showing animal keeper Thomas Doerflein with polar bear Knut leans against the just unveiled sculpture 'Knut The Dreamer' at the zoo in Berlin on October 24, 2012. Knut, who died suddenly aged four from a suspected brain seizure in 2011, had shot to fame as an ueber-sweet cub after being abandoned by his mother and reared by hand. AFP PHOTO / JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)

  • A woman touches a monument to polar bear Knut after its unveiling at the Zoo in Berlin, Germany, Wednesday, Oct. 24, 2012. Knut, who was born in Dec. 2006 at the zoo, quickly rose to celebrity status as an irresistibly cute, fluffy cub. Knut was rejected by his mother at birth — along with his twin brother, who only survived a couple of days. He attracted attention when his main caregiver, Thomas Doerflein, camped out at the zoo to give the button-eyed cub his bottle every two hours. Knut died March 19, 2011 in front of hundreds of visitors at Berlin zoo, turning around several times and then falling into the water in his enclosure. A necropsy of the four-year-old bear showed he was suffering from encephalitis. (AP Photo/Michael Sohn)

  • A woman touches a monument to polar bear Knut after its unveiling at the Zoo in Berlin, Germany, Wednesday, Oct. 24, 2012. Knut, who was born in Dec. 2006 at the zoo, quickly rose to celebrity status as an irresistibly cute, fluffy cub. Knut was rejected by his mother at birth — along with his twin brother, who only survived a couple of days. He attracted attention when his main caregiver, Thomas Doerflein, camped out at the zoo to give the button-eyed cub his bottle every two hours. Knut died March 19, 2011 in front of hundreds of visitors at Berlin zoo, turning around several times and then falling into the water in his enclosure. A necropsy of the four-year-old bear showed he was suffering from encephalitis. (AP Photo/Michael Sohn)

  • A polar bear shakes its head in its enclosure at the Zoo in Berlin, Germany, Wednesday, Oct. 24, 2012. A monument to the polar bear Knut was unveiled at the zoo on Wednesday morning. Polar bear Knut became a global celebrity before his sudden death last year. (AP Photo/Michael Sohn)

  • LOXX Miniature Train Landscape Recreates Central Berlin

    BERLIN, GERMANY - APRIL 19: A figurine representing Knut the polar bear stands in his zoo enclosure at the LOXX miniature train landscape at the Alexa shopping mall on April 19, 2012 in Berlin, Germany. The LOXX landscape recreates in 1:87 scale landmarks of central Berlin as well as a myriad of often humorous little scenes of everyday life. According to a company employee the landscape covers 1,100 square meters, contains 200,000 lights, 90,000 human figures, 5,800 meters of model train track, a model airport and has 150 trains running at any one time. It also has coloured ceiling lights that dim and change to imitate twilight, nighttime and dawn, as well as sound effects to imitate an occasional thunder storm. LOXX technicians are currently expanding the landscape in order to also recreate Potsdamer Platz. (Photo by Sean Gallup/Getty Images)

  • Polar Bear Knut Dies At Age Four

    BERLIN, GERMANY - MARCH 22: A woman pauses to look at messages, candles and flowers left by mourners at the gate of the Berlin Zoo in memory of polar bear Knut on March 22, 2011 in Berlin, Germany. Knut died unexpectedly at the age of four on March 19, and zoo officials have announced that initial autopsy results point to some kind of brain trauma as the cause of death. Knut won worldwide fame following his birth at the zoo and became among the city's most popular tourist attractions. (Photo by Sean Gallup/Getty Images)

  • Polar Bear Knut Dies At Age Four

    BERLIN, GERMANY - MARCH 22: A photograph of polar bear Knut lies amond candles and flowers left by mourners at the gate of the Berlin Zoo on March 22, 2011 in Berlin, Germany. Knut died unexpectedly at the age of four on March 19, and zoo officials have announced that initial autopsy results point to some kind of brain trauma as the cause of death. Knut won worldwide fame following his birth at the zoo and became among the city's most popular tourist attractions. (Photo by Sean Gallup/Getty Images)

  • Polar Bear Knut Dies At Age Four

    BERLIN, GERMANY - MARCH 22: A woman adds a flower to messages, candles and flowers left by mourners at the gate of the Berlin Zoo in memory of polar bear Knut on March 22, 2011 in Berlin, Germany. Knut died unexpectedly at the age of four on March 19, and zoo officials have announced that initial autopsy results point to some kind of brain trauma as the cause of death. Knut won worldwide fame following his birth at the zoo and became among the city's most popular tourist attractions. (Photo by Sean Gallup/Getty Images)

  • A candle left in memory of polar bear Kn

    A candle left in memory of polar bear Knut is pictured in front of the entrance of the Berlin zoo (Zoologischer Garten) April 1, 2011. Mourning over Berlin Zoo's superstar polar bear Knut, who died suddenly aged just four on March 19, is slowly but surely being replaced with a growing wave of anger -- and confusion. Fans of Knut, who shot to nothing short of global fame as an ueber-cute cub in 2007, are planning a demonstration in protest at plans for his body to be stuffed and put on display at Berlin's Natural History Museum. AFP PHOTO / JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)

  • Polar Bear Knut Dies At Age Four

    BERLIN, GERMANY - MARCH 22: Visitors pause to look at messages, candles and flowers left by mourners at the gate of the Berlin Zoo in memory of polar bear Knut on March 22, 2011 in Berlin, Germany. Knut died unexpectedly at the age of four on March 19, and zoo officials have announced that initial autopsy results point to some kind of brain trauma as the cause of death. Knut won worldwide fame following his birth at the zoo and became among the city's most popular tourist attractions. (Photo by Sean Gallup/Getty Images)

  • A picture of Knut the polar bear can be

    A picture of Knut the polar bear can be seen in front his enclosure at the Berlin zoo (Zoologischer Garten) March 20, 2011. Germany was in stunned mourning after the sudden and premature death of Knut, Berlin's world-famous polar bear, who died on March 19, 2011, at the end of what animal welfare groups said was an unhappy, short life. AFP PHOTO / JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)

  • Red roses and a picture of Knut the pola

    Red roses and a picture of Knut the polar bear can be seen in front of the entrance to the Berlin zoo (Zoologischer Garten) March 20, 2011. Germany was in stunned mourning after the sudden and premature death of Knut, Berlin's world-famous polar bear, who died on March 19, 2011, at the end of what animal welfare groups said was an unhappy, short life. AFP PHOTO / JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)

  • Flowers and candles can be seen at the e

    Flowers and candles can be seen at the enclosure of Knut the polar bear at the Berlin zoo (Zoologischer Garten) March 20, 2011 in Berlin. Germany was in stunned mourning after the sudden and premature death of Knut, Berlin's world-famous polar bear, who died on March 19, 2011, at the end of what animal welfare groups said was an unhappy, short life. AFP PHOTO / JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)

  • Knut the polar bear walks in his enclosu

    Knut the polar bear walks in his enclosure in the Berlin zoo (Zoologischer Garten) December 27, 2010. Forecasts predict more snow in the German capital, with temperatures staying below zero. AFP PHOTO / JOHN MACDOUGALL (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)

  • Knut the polar bear stands on his hind l

    Knut the polar bear stands on his hind legs at his enclosure in the Berlin zoo (Zoologischer Garten) December 27, 2010. Forecasts predict more snow in the German capital, with temperatures staying below zero. AFP PHOTO / JOHN MACDOUGALL (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)

  • FILES - Picture taken on December 10, 20

    FILES - Picture taken on December 10, 2010 shows the world's most famous polar bear Knut sitting in his enclosure at the zoo in Berlin. Germany was in stunned mourning after the sudden and premature death of Knut, Berlin's world-famous polar bear, who died on March 19, 2011, at the end of what animal welfare groups said was an unhappy, short life. AFP PHOTO / JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)

  • The world's most famous polar bear Knut

    The world's most famous polar bear Knut yawns in his enclosure at the zoo in Berlin on December 10, 2010. Meteorologists forecast fresh temperatures and some precipitations for the German capital. AFP PHOTO / JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)

  • The world's most famous polar bear Knut

    The world's most famous polar bear Knut sits in his enclosure at the zoo in Berlin on December 10, 2010. Meteorologists forecast fresh temperatures and some precipitations for the German capital. AFP PHOTO / JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)

  • The world's most famous polar bear Knut

    The world's most famous polar bear Knut yawns in his enclosure at the zoo in Berlin on December 10, 2010. Meteorologists forecast fresh temperatures and some precipitations for the German capital. AFP PHOTO / JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)

  • The world's most famous polar bear Knut

    The world's most famous polar bear Knut yawns in his enclosure at the zoo in Berlin on December 10, 2010. Meteorologists forecast fresh temperatures and some precipitations for the German capital. AFP PHOTO / JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)

  • The world's most famous polar bear Knut

    The world's most famous polar bear Knut eats his 'birthday cake' on his fourth birthday in his snow-covered enclosure at the Tiergarten zoo in Berlin, on December 5, 2010 in Berlin. AFP PHOTO JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)

  • The world's most famous polar bear Knut

    The world's most famous polar bear Knut eats his 'birthday cake' on his fourth birthday in his snow-covered enclosure at the Tiergarten zoo in Berlin, on December 5, 2010 in Berlin. AFP PHOTO JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)

  • FILES - Picture taken on October 19, 201

    FILES - Picture taken on October 19, 2011 shows polar bear Knut diving in the pond in his enclosure at the Zoologischer Garten zoo in Berlin. Mourning over Berlin Zoo's superstar polar bear Knut, who died suddenly aged just four on March 19, 2011, is slowly but surely being replaced with a growing wave of anger -- and confusion. Fans of Knut, who shot to nothing short of global fame as an ueber-cute cub in 2007, are planning a demonstration in protest at plans for his body to be stuffed and put on display at Berlin's Natural History Museum. AFP PHOTO / ODD ANDERSEN (Photo credit should read ODD ANDERSEN/AFP/Getty Images)

  • FILES - Picture taken on October 19, 201

    FILES - Picture taken on October 19, 2010 shows polar bear Knut interacting with six-year-old visitor Nane and her cushy polar bear 'Knut' at the Zoologischer Garten zoo in Berlin. Mourning over Berlin Zoo's superstar polar bear Knut, who died suddenly aged just four on March 19, 2011, is slowly but surely being replaced with a growing wave of anger -- and confusion. Fans of Knut, who shot to nothing short of global fame as an ueber-cute cub in 2007, are planning a demonstration in protest at plans for his body to be stuffed and put on display at Berlin's Natural History Museum. AFP PHOTO / ODD ANDERSEN (Photo credit should read ODD ANDERSEN/AFP/Getty Images)

  • (FILES) - Picture taken on October 19, 2

    (FILES) - Picture taken on October 19, 2010 shows polar bear Knut interacts with six-year-old visitor Nane and her cushy polar bear 'Knut' at the Tiergarten zoo in Berlin. Knut has died on March 19, 2011 according to the zoo. The cause of death was not immediately known. AFP PHOTO / ODD ANDERSEN (Photo credit should read ODD ANDERSEN/AFP/Getty Images)

  • Polar bear Knut interacts with six-year-

    Polar bear Knut interacts with six-year-old visitor Nane and her cushy polar bear 'Knut' at the Tiergarten zoo in Berlin on October 19, 2010. German newspapers reported today that the world famous polar bear is being bullied by his fellow polar bears in their enclosure in the Berlin zoological garden. AFP PHOTO / ODD ANDERSEN (Photo credit should read ODD ANDERSEN/AFP/Getty Images)

  • Visitors watch as the world's most famou

    Visitors watch as the world's most famous polar bear Knut eats his 'birthday cake' on his fourth birthday in his snow-covered enclosure at the Tiergarten zoo in Berlin, on December 5, 2010 in Berlin. AFP PHOTO JOHANNES EISELE (Photo credit should read JOHANNES EISELE/AFP/Getty Images)

  • Polar bear Knut swims in his enclosure a

    Polar bear Knut swims in his enclosure at the Tiergarten zoo in Berlin, October 19, 2010. German newspapers reported today that the world famous polar bear is being bullied by his fellow polar bears in their enclosure in the Berlin zoological garden. AFP PHOTO / ODD ANDERSEN (Photo credit should read ODD ANDERSEN/AFP/Getty Images)

  • Polar bear Knut interacts with six-year-

    Polar bear Knut interacts with six-year-old visitor Nane and her cushy polar bear 'Knut' at the Tiergarten zoo in Berlin on October 19, 2010. German newspapers reported today that the world famous polar bear is being bullied by his fellow polar bears in their enclosure in the Berlin zoological garden. AFP PHOTO / ODD ANDERSEN (Photo credit should read ODD ANDERSEN/AFP/Getty Images)

  • Knut, the world's most famous polar bear

    Knut, the world's most famous polar bear relaxes in his enclosure at the Zoo of Berlin, on September 23, 2010. AFP PHOTO / PATRICK SINKEL (Photo credit should read Patrick Sinkel/AFP/Getty Images)

  • Knut, the world's most famous polar bear

    Knut, the world's most famous polar bear relaxes in his enclosure at the Zoo of Berlin, on September 23, 2010. AFP PHOTO / PATRICK SINKEL (Photo credit should read Patrick Sinkel/AFP/Getty Images)

  • Polar bear Knut catches a fish as he is

    Polar bear Knut catches a fish as he is fed on June 17, 2010 in his enclosure at the Zoologischer Garten zoo in Berlin. Most polar bears in captivity in Germany have psychological problems, with Berlin Zoo's superstar Knut probably the worst of all, scientists said after a two-year study. 'Cute Knut', who became an international media sensation in 2007, even making the cover of glossy US magazine Vanity Fair, suffers from panic attacks and 'sways to and fro' in an abnormal manner, a researcher from the animal welfare group People for the Ethical Treatment of Animals (PETA) told AFP. AFP PHOTO BARBARA SAX (Photo credit should read BARBARA SAX/AFP/Getty Images)

  • Polar bear Knut catches a fish as he is

    Polar bear Knut catches a fish as he is fed on June 17, 2010 in his enclosure at the Zoologischer Garten zoo in Berlin. Most polar bears in captivity in Germany have psychological problems, with Berlin Zoo's superstar Knut probably the worst of all, scientists said after a two-year study. 'Cute Knut', who became an international media sensation in 2007, even making the cover of glossy US magazine Vanity Fair, suffers from panic attacks and 'sways to and fro' in an abnormal manner, a researcher from the animal welfare group People for the Ethical Treatment of Animals (PETA) told AFP. AFP PHOTO BARBARA SAX (Photo credit should read BARBARA SAX/AFP/Getty Images)

  • Polar bear Knut catches a fish as he is

    Polar bear Knut catches a fish as he is fed on June 17, 2010 in his enclosure at the Zoologischer Garten zoo in Berlin. Most polar bears in captivity in Germany have psychological problems, with Berlin Zoo's superstar Knut probably the worst of all, scientists said after a two-year study. 'Cute Knut', who became an international media sensation in 2007, even making the cover of glossy US magazine Vanity Fair, suffers from panic attacks and 'sways to and fro' in an abnormal manner, a researcher from the animal welfare group People for the Ethical Treatment of Animals (PETA) told AFP. AFP PHOTO BARBARA SAX (Photo credit should read BARBARA SAX/AFP/Getty Images)

  • Polar bear Knut walks around his enclosu

    Polar bear Knut walks around his enclosure at the Zoologischer Garten zoo in Berlin on June 17, 2010. Most polar bears in captivity in Germany have psychological problems, with Berlin Zoo's superstar Knut probably the worst of all, scientists said after a two-year study. 'Cute Knut', who became an international media sensation in 2007, even making the cover of glossy US magazine Vanity Fair, suffers from panic attacks and 'sways to and fro' in an abnormal manner, a researcher from the animal welfare group People for the Ethical Treatment of Animals (PETA) told AFP. AFP PHOTO BARBARA SAX (Photo credit should read BARBARA SAX/AFP/Getty Images)

  • Polar bear Knut begs for food on June 17

    Polar bear Knut begs for food on June 17, 2010 in his enclosure at the Zoologischer Garten zoo in Berlin. Most polar bears in captivity in Germany have psychological problems, with Berlin Zoo's superstar Knut probably the worst of all, scientists said after a two-year study. 'Cute Knut', who became an international media sensation in 2007, even making the cover of glossy US magazine Vanity Fair, suffers from panic attacks and 'sways to and fro' in an abnormal manner, a researcher from the animal welfare group People for the Ethical Treatment of Animals (PETA) told AFP. AFP PHOTO BARBARA SAX (Photo credit should read BARBARA SAX/AFP/Getty Images)

  • Polar bear Knut walks around his enclosu

    Polar bear Knut walks around his enclosure at the Zoologischer Garten zoo in Berlin on June 17, 2010. Most polar bears in captivity in Germany have psychological problems, with Berlin Zoo's superstar Knut probably the worst of all, scientists said after a two-year study. 'Cute Knut', who became an international media sensation in 2007, even making the cover of glossy US magazine Vanity Fair, suffers from panic attacks and 'sways to and fro' in an abnormal manner, a researcher from the animal welfare group People for the Ethical Treatment of Animals (PETA) told AFP. AFP PHOTO BARBARA SAX (Photo credit should read BARBARA SAX/AFP/Getty Images)

  • Knut Enjoys Giovanna's Company

    BERLIN - MARCH 04: Polar bear Knut plays with a branch at the Berlin Zoo on March 4, 2010 in Berlin, Germany. Knut has been enjoying the company of Giovanna, a polar bear who is on loan for several months from a zoo in Munich. (Photo by Sean Gallup/Getty Images)

  • Knut Enjoys Giovanna's Company

    BERLIN - MARCH 04: Polar bear Knut plays with a branch at the Berlin Zoo on March 4, 2010 in Berlin, Germany. Knut has been enjoying the company of Giovanna, a polar bear who is on loan for several months from a zoo in Munich. (Photo by Sean Gallup/Getty Images)

  • Knut, the 3-year-old polar bear, rolls i

    Knut, the 3-year-old polar bear, rolls in the snow in his enclosure at Berlin's Zoologischer Garten zoo January 8, 2010. With temperatures below zero and an ample supply of snow, Knut is finally experiencing his natural habitat. AFP PHOTO / JOHN MACDOUGALL (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)

  • FILES - Picture taken on January 8, 2010

    FILES - Picture taken on January 8, 2010 shows polar bear Knut leaving his 'cave' in his enclosure at Berlin's Zoologischer Garten zoo. Mourning over Berlin Zoo's superstar polar bear Knut, who died suddenly aged just four on March 19, 2011, is slowly but surely being replaced with a growing wave of anger -- and confusion. Fans of Knut, who shot to nothing short of global fame as an ueber-cute cub in 2007, are planning a demonstration in protest at plans for his body to be stuffed and put on display at Berlin's Natural History Museum. AFP PHOTO / JOHN MACDOUGALL (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)

  • Knut Celebrates Birthday

    BERLIN - DECEMBER 05: Polar bear Knut is seen in his outdoor enclosure at the Berlin Zoo on December 5, 2008 in Berlin, Germany. The Berlin Zoo celebrates the 2nd birthday of the popular polar bear Knut. (Photo by Carsten Koall/Getty Images)

  • Knut Celebrates Birthday

    BERLIN - DECEMBER 05: Polar bear Knut is seen in his outdoor enclosure at the Berlin Zoo on December 5, 2008 in Berlin, Germany. The Berlin Zoo celebrates the 2nd birthday of the popular polar bear Knut. (Photo by Carsten Koall/Getty Images)

  • Knut Celebrates Birthday

    BERLIN - DECEMBER 05: Polar bear Knut is seen in his outdoor enclosure at the Berlin Zoo on December 5, 2008 in Berlin, Germany. The Berlin Zoo celebrates the 2nd birthday of the popular polar bear Knut. (Photo by Carsten Koall/Getty Images)

  • Polar bear Knut plays with a cushion tha

    Polar bear Knut plays with a cushion that he was offered with his birthday 'cake' on the day of his second birthday at the zoo in Berlin on December 5, 2008. Just before his second birthday on December 5, 2008, it was announced that Knut will have to leave the German capital, probably before Easter 2009. The bear caused a global sensation when he survived rejection by his mother and attracted more than two million visitors to the zoo. AFP PHOTO DDP/MICHAEL GOTTSCHALK GERMANY OUT (Photo credit should read MICHAEL GOTTSCHALK/AFP/Getty Images)