Ice Age: A Mammoth Christmas is a 2011 computer animated television special and part of the Ice Age franchise, produced by Blue Sky Studios and directed by Karen Disher. It premiered on November 24, 2011 on Fox in the United States and in the United Kingdom every christmas on Channel 4 and E4 and it was released two days later to DVD and Blu-ray. Despite being produced by Blue Sky Studios, the film's animation was actually done by some animators at Blue Sky and mainly by the Santa Monica/Texas-based special effects and animation company, Reel FX Creative Studios.