A middle-aged woman leads a traveling circus act through the Midwest featuring 26 monkeys who climb into a bathtub and disappear and then reappear on her bus after the show. The impending death of one of the key monkeys causes her to wrestle with the meaning of life.

After a trial injection of an experimental drug into a group of monkeys, an observer watches the various participants’ unusual and often deadly responses.

Sly, a monkey with human capacities, is growing increasingly upset with his containment. All he wants is to be treated with respect.

Jim's years of experience as a zookeeper and guard haven't prepared him for the boy who climbs into the lion's den - or the animals' unnatural behavior afterwards.

A circus wire-walker suffers an injury that relegates him to an unimportant side-show, but he finds solace in the company of a Rhesus monkey who has lost her child.

A man’s game with his son turns into something more sinister when he finds out that his son is seeing things that he isn’t.

Advancements in technology bring a chimpanzee's intelligence on par with humans, and he sets off to the moon to conduct research while yearning for his simpler life before he was augmented.

A group of American explorers and scientists in Africa, including two women, venture into the wild looking for gorillas. When one of the women goes missing, their native guides quit their jobs, and the men lead a slaughter of the gorillas, the other woman wonders if the first woman disappeared into the world of the gorillas by choice, to escape the confines of her life with men.

A squirrel monkey defeats the competition and fulfills her dream of becoming an astronaut. Based on the true story of Miss Baker, one of the first animals to be launched into space in 1959.

A Japanese primate sociologist's life falls apart in slow-motion as he struggles with research, tension in his marriage, and his declining health.