Trivia: When Ben Peterson is killed by a giant ant, he emits a high-pitched, half-choked death scream. This scream has been used in many other movies ever since: in Small Soldiers (when Brick Bazooka loses his legs); in Star Wars - A New Hope, when Luke shoots a stormtrooper in the shaft-swinging scene; in Lord Of The Rings - The Two Towers, when an Elf warrior is thrown off the Helm's Deep wall; and in Lord Of The Rings - Return of The King, when a Gondor soldier fleeing from Osgilliath is snatched up and dumped by a Nazgul steed. I guess that makes it the most used death scream in movie history.
Trivia: William Alland who produced The Creature From The Black Lagoon, acted in Citizen Kane as the reporter who investigates Kane's career. During the filming Alland met Mexican cinematographer Gabriel Figueroa Mateos, who told him a legend of an amphibious creature who comes out of the River Amazon to seize women. Alland wrote a story based on the legend, which would form the basis of this 1954 horror film.