BROOKFIELD, Ill. -- Tuesday's weather was so warm that the Brookfield Zoo let their giraffes stretch their legs outside!Zoo officials said they took advantage of this week's predicted warm weather to give the animals access to their outdoor habitat.Potoka, a 2-year-old male, was so happy that he pranced across the habitat several times. Other members of the herd - including 10-year-old Arnieta, 11-year-old Jasiri and 26-year-old Mithra - also joined.