When first released, this movie played as the bottom half of a double bill with Earth vs. the Flying Saucers (1956).
The werewolf in this film was the screen's first science-fictional, non-supernatural lycanthrope. While possessed of incredible strength and ferocity, he could be killed by ordinary bullets ( don't need silver bullets ) and didn't require a full moon to cause transformation.
This isn't the first time Clay Campbell created a werewolf makeup. He used the same techniques to create the monster for an earlier film, The Return of the Vampire (1943).
Director Fred F. Sears also served as the narrator in the opening sequence.
Probably to save time and/or money, shots of the werewolf fleeing the posse near the climax, were shot "day-for-night" while the posse shots were filmed during real nighttime.