This list of theatrical animated feature films consists of animated films produced or released by 20th Century Studios (formerly 20th Century Fox). 20th Century releases films from 20th Century-owned and non-20th Century owned animation studios. Most films listed below are from Blue Sky Studios which began as a feature animation department of 20th Century Animation (formerly 20th Century Fox Animation) producing its first feature-length animated film Ice Age in 2002. Beginning with Hugo the Hippo in 1975, 20th Century has released animated films by other production companies, such as DreamWorks Animation (which is now owned by Universal Pictures).