Synopsis by Hal Erickson
With the threat of nuclear annihilation looming over the earth, scientists determine to send a cow (and every other animal species) over the moon. "Operation Noah's Ark" involves filling a space capsule with animals of all varieties (how'd you like to be the janitor on that flight?) Unfortunately, the capsule crashes on earth. Equally unfortunately, the animals have been exposed to radiation, turning the otherwise-docile creatures into hideous mutants. Before long, these various monstrosities merge into one huge, unstoppable killing machine. That's why the film is called Demon From Devil's Lake, rather than "Demons," plural.
radioactivity, monster, mutant, lake