Plot hole: When the two moose run after Kenai and Koda asking for protection from the hunter, they talk about Denahi following their paw prints and Kenai looks behind him at the paw print. But if the moose followed their paw prints, wouldn't there be hoof prints as well?

Continuity: After Koda frees Kenai from the rope trap, the rope disappears twice from around his (Kenai's) leg: first when he is walking towards his brother Denahi (then the rope reappears around his leg as he runs away), and disappears again when he meets Koda again inside the glacier (only to reappear again when he snags it around a rock/ice chunk and trips).

Continuity: At the beginning and end of the film, there is a narration who the subtitles label as Sitka, but at the very beginning, we see that the narrator is actually Denahi.

Continuity: In the scene where the bears are riding the mammoth, Koda is touching Kenai, but when the camera angle changes, they are at least a foot away from each other.