Zoo is a 2007 American documentary film based on the life and death of Kenneth Pinyan. This American man died of peritonitis due to perforation of the colon after engaging in receptive anal sex with a horse. The film combines audio testimony from people involved in the case or who were familiar with Pinyan, "with speculative re-enactments that feature a mix of actors and actual subjects."

The film’s title refers to the subcultural term for a zoophile, a person with a sexual interest in animals. Zoo’s filmmakers intended to approach the film’s subject matter from a non-sensationalized perspective and chose to forego more lurid details, focusing instead on humanizing the people involved.

The film premiered at the Sundance Film Festival in January 2007, one of 16 documentaries accepted out of 857 candidates. Following Sundance, it was selected as one of five American films to be presented at the Directors' Fortnight sidebar at the 2007 Cannes Film Festival.