The depletion of the earth's ozone layer causes animals above the altitude of 5000 feet to run amok, which is very unfortunate for a group of hikers who get dropped off up there by helicopter just before the quarantine is announced.
Day of the Animals 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.
