Roar is a 1981 American adventure comedy film written, produced, and directed by Noel Marshall.

In 1969, while Hedren was filming Satan’s Harvest in Mozambique, she and Marshall had occasion to observe a pride of lions move into a recently vacated house, driven by increased poaching. They decided to make a film centered around that theme, bringing rescued big cats into their homes in California and living with them. Filming began in 1976; it was finished after five years. The film was fully completed after 11 years in production.

Roar was not initially released in North America; in 1981, Noel and John Marshall privately released it internationally. Despite performing well in Germany and Japan, Roar was a box office failure, grossing $2 million worldwide against a $17 million budget. In 2015, 34 years after the film’s original release, it was released in theaters in the United States by Drafthouse Films.

The cast and crew members of Roar faced dangerous situations during filming; seventy people, including the film’s stars, were injured as a result of multiple animal attacks. In 1983, Hedren founded the Roar Foundation and established the Shambala Preserve sanctuary, to house the animals appearing in the film. The film has been described as “the most dangerous film ever made” and “the most expensive home movie ever made”, and has gained a cult following.