Continuity: While Kenai is falling of the ledge before he goes into the ice cave, his rope completely disappears.
Factual errors: During the ice age, people used weapons fashioned from antler, bone and stone. The spear tips and knives in the film appear to be made of metal, which weren't adopted by humans in North America until much later.
Factual errors: In the opening scene, the English subtitles for the film read that Sitka is speaking, when it is actually Denahi.