When Keda falls during the hunt, he hits two ledges on the way down (and tries to grab a third, smaller ridge) before landing on the ledge below. But a few seconds later, when the camera travels from the tribe above to the unconscious Keda below, no other ledges protrude between the top and the ledge on which he is lying.
There is a double rainbow shown but the colors of the outer one are wrong. The primary (inner) rainbow is blue to red, but the secondary should be red to blue.
The big cat in the movie is supposed to be a Machairodus. However, its teeth are far too large for this genus, looking more like the sabres of Smilodon (which was only ever found in the Americas).
According to this film, after you break your leg ( and reset it) you can walk unaided after a few hours and within days climb trees and run .
The dominance hierarchy among wolves presented in the film is only exhibited in the real world by captive wolves.
In the first cave scene, Kedi is kneeling to approach the wolf, and the bottom of his boot clearly shows a rubber lugged sole.
When Keda descends from a tree to check on injured Alpha, his shoes have black colored rubber soles. Later in a cave, when he stood up, his soles were white in color.
13 minutes in, the double rainbow in the waterfall has colors in the same order; actual double rainbows have red butted against red.
The hunting party is supposed to be in Europe, but are shown hunting American buffalo/bison.