In November 2007, Knut weighed over 90 kg (198 lb) and became too dangerous to be cared for closely. Hundreds of children attended the cub's first birthday celebration. This party was also shown live on German television. The national mint also made 25,000 special silver coins for his birthday. When Flocke, a female polar bear, was born at the Nuremberg Zoo in December 2007, "Bild" named her Mrs. Knut, suggesting that the two German-born polar bears might become mates.