La Planète sauvage (Fantastic Planet)

The dream-like story concerns the degradation of the Oms, human-like creatures on the futuristic planet Yagam. The Oms are kept as pets and beasts of burden by the Draggs, 39-foot beings who comprise Yagam's ruling class. The status quo is upset when Terr, one of the Oms, accidentally receives an education, whereupon he organizes the other Oms to demand equality with the Draggs. (Hal Erickson)