James Hayter is dubbed
According to the liner notes of the soundtrack CD, the lyrics of most of the choruses heard throughout the film, often thought to be Asian, Semetic or Egyptian in origin, are actually "gibberish" that composer Dimitri Tiomkin concocted to evoke the period and "sound" like ancient Egyptian and are actually meaningless.
Although the ancient Egyptians did indeed have a close relationship with the Nile Crocodile (which is believed to have included sacrifices and mummification), the reptiles in the film are actually American Alligators.
The movie was Howard Hawks's first commercial failure. It caused Hawks to take a break from directing and travel through Europe for a number of years. He made his next movie, Rio Bravo, four years later - the longest break between two movies in his career.
WILHELM SCREAM: Emanating from within a crocodile.