Day Of The Animals (1977) [Blu-ray]

When a hole in the Earth's ozone layer triggers bloodthirsty madness throughout the animal kingdom, all mankind - particularly a group of tourists on an overnight hike - will become their prey. Christopher George, Lynda Day George, Richard Jaeckel, Michael Ansara, Andrew Stevens and Leslie Nielsen star in "one of the most outrageous offerings the drive-in has ever known" (Pop Matters).