Fantastic Planet (French: La Planète sauvage, Czech: Divoká planeta, lit. The Wild Planet) is a 1973 animated science fiction film directed by René Laloux and written by Laloux and Roland Topor. The allegorical story, about humans living on a strange planet dominated by giant humanoid aliens who consider them animals, is based on the 1957 novel Oms en série by French writer Stefan Wul.

References:
https://en.wikipedia.org/wiki/Fantastic_Planet