Second Nature: Gender and Sexuality in the Animal World

Second Nature: Gender and Sexuality in the Animal World (2026)



1.0 2026 82 min —

Director: Drew Denny

Cast: Elliot Page, Joan Roughgarden, Patricia Brennan, Amy Parish, Joseph Graves

Narrated by Elliot Page, *Second Nature* flips the script on outdated biology lessons. Join pioneering evolutionary biologist Dr. Joan Roughgarden as she connects with scientists uncovering over 1,500 animal species that defy expectations: clownfish naturally transition from male to female (meaning Nemo’s dad could have become his mom), albatross, penguins, and swans raise young in same-sex pairs, and bonobos—our close relatives alongside chimps—live in matriarchal societies with daily same-sex encounters. This eye-opening documentary shatters myths that females are “lesser” and queerness is “unnatural,” revealing a wild world where sex change, same-sex parenting, and matriarchies are the norm. *Second Nature*—everything your high school science class left out.

More About This Film

Elliot Page narrates Second Nature, a hilarious and heartening romp through the animal world, led by brave scientists fighting censorship as they reveal the true complexity of gender and sexuality in nature. The documentary challenges long-held assumptions about biological sex and gender roles, presenting evidence from leading researchers that nature is far more diverse than traditional science has often portrayed.

The film features interviews with prominent experts including Joan Roughgarden, Patricia Brennan, Amy Parish, Joseph Graves, and Frans de Waal. These scientists share their groundbreaking work, which demonstrates that same-sex behavior, gender nonconformity, and complex social structures are widespread across many species. By weaving together humor and rigorous science, the movie aims to normalize these observations and encourage a deeper understanding of biodiversity beyond human-centric views.

  • Elliot Page serves as the narrator, bringing public attention to the scientific community's ongoing debates regarding sex and gender.
  • The documentary highlights the courage of researchers who face professional backlash or censorship for publishing findings that contradict conventional wisdom.
  • Featured experts include renowned primatologist Frans de Waal and evolutionary biologist Joan Roughgarden, known for challenging standard models of evolution.
  • The film has been praised for its accessible tone, balancing comedic elements with serious scientific inquiry.

Where to Watch

Availability may vary by region; please check local listings for streaming options.