Giant iguana
The giant iguana in the film One Million Years BC, was played by a live actor. However, its long chameleon-like tongue was animated by Ray Harryhausen.


The giant iguana was a large non-modeled Black iguana, the roamed the Prehistoric Deserts, hunting small, easy, prey. This is unlike Modern Iguana, which are only vegatarian. However, this factor was probably overlooked in the making of the film. The prehistoric iguana was slightly smaller than a bus, and had a long body, and narrow tail, with spikes going along the sides.