Day of the Animals (re-released as Something Is Out There) is a 1977 American natural horror film directed by William Girdler, based on a story by producer Edward L. Montoro. The film reunited Girdler and Montoro with stars Christopher George and Richard Jaeckel from the previous year's Grizzly. It co-stars Lynda Day George and Leslie Nielsen.

Day of the Animals tells the story of a psychosis brought on by depletion of the Earth's ozone layer, affecting all animals at high altitudes. A group of hapless hikers must survive the animal onslaught and make their way to safety, even as the psychosis turns them against each other.