Although the film fared only modestly at the box office, it steadily built a strong cult following over the years. It subsequently received significant local TV and cable airplay in the USA, notably HBO and TBS where it became a TV mainstay and viewer favorite. Its replay was so common that some dubbed TBS "The Beastmaster Station", and HBO as "Hey, Beastmaster is On".
According to Boone's Animals for Hollywood (the trainers for "The Beastmaster"), the tiger that was used (he was indeed dyed black) did not die from "complications" or "poisoning" from the vegetable dye that was used, and the "death from dye" is just an urban legend.
Dar's black tiger is actually a regular striped tiger dyed black. The dye would wash off around the mouth whenever the tiger took a drink, so throughout the film the stripes are often visible around the mouth.
Several of the actors appear in very small costumes, including loincloth-only garb. Though the film appears to be set in a warm climate, it was quite cold on the set and the actors would have to find warmth in between scenes.
The film originally started shooting with anamorphic lenses, but cinematographer John Alcott switched to spherical lenses early on because he did not think anamorphic gave him the sharpness and depth of field he wanted. The anamorphic footage - young Dar's encounter with the bear in the forest - was later cropped to match the 1.85:1 final aspect ratio of the spherical footage.