Douglas Sirk was originally set to direct the film but fell ill and was replaced by Joseph Pevney.
The real name of the Great Dane who played Wapi was Baron.
Universal-International borrowed Steve Cochran (I) from Warner Brothers.
Among the two actors playing opposite Rock Hudson is Hugh O'Brian, who plays a character with the last name Hudson.
One of the two films in which Rock Hudson fist fights with "evil" characters and where he loses the fights. The other one is GIANT.