Cool Horse: Ilderim's "children" are supposed to be Arabs, but are played by Lipizzaners, which are descended from North African Barbs. The sorrel horse Ilderim rides is an Arab; she shows the characteristic "flagging" of her tail as she runs.
Enforced Method Acting: The stunt coordinator for the 1959 version was the legendary veteran stuntman/director Yakima Canutt; his son Joe was one of the stunt charioteers standing in for Heston. Joe is the one you see driving — and nearly flipped right out of the chariot — as the horses jump some wreckage in their path. That was unplanned, and Wyler kept it in, putting in a shot of Heston climbing back into place. Joe was unharmed.