Since all the ape-men are modern-day actors wearing makeup, this means that several species have the wrong body proportions and also a much taller head.
The program features many badly made composite shots. The ape-men playing with the presenter's jeep at times have a different hue than the surroundings, their movements are out of sync with the jeep as they make it rock, and they aren't reflected on the vehicle, whereas the presenter is.