Once Upon a Cow (2017) is a Documentary film that follows through this exploration of three cows, each living in a very different environment, this documentary reveals the daily life and behavior of this fascinating animal with highly developed social intelligence. Once Upon a Cow is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 7.5 out of 10 from 2 votes. Fans of documentary movies may also want to explore similar titles below.