Day of the Animals - Official Trailer. 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 via helicopter just before the quarantine is announced. br br Leslie Nielson plays a sadistic villain in a performance that will shock anyone familiar with his comedic work in the Naked Gun Series. A camp classic of the animals attack genre, which came into vogue with the increased ecological awareness of the 1970's. br br Starring Christopher George, Leslie Nielsen, Lynda Day George Richard Jaeckel, Michael Ansara, Ruth Roman br br Horror, 97 minutes, 1977 br br Subscribe to ThrillGore TV: br ThrillGore TV on Facebook: Facebook.comThrillGoreTV br ThrillGore TV on Twitter: Twitter.comThrillGoreTV br ThrillGore TV on Tumblr: ThrillGoreTV.Tumblr.