Sufficiently small animals cannot be hurt in a fall from any height: A monkey is too big, a squirrel is on the edge, but a mouse is completely safe. The mouse-sized people in Dr. Cyclops could have leapt off the tabletop with a cry of “Geronimo!” secure in the knowledge that they were too small to be hurt.
So says Michael C. LaBarbera in his study “The Biology of B-Movie Monsters.”