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Continuity mistake: In the carnivorous plant scene, Manny grabs the fruit (the bait), which is sitting in the middle of the plant. In the next few shots, the bait disappears and then is replaced with a bulb that housed the red and blue "wires".

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Plot hole: In the very end of the movie, when Scrat rides the rocket back to the ice world, it smashes a hole through the ice layer. Two mistakes follow: First, bits and pieces of ice fall away from the rocket. One can conclude that the hole is slightly bigger than the ice slab above, yet they fit perfectly together when the ice falls back down. Second, how can the ice separate from the rocket and fall exactly where it was before?

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Continuity mistake: In the beginning, Scrat is sniffing for his acorn and reaches the end of the cliff. Before he reaches the end, look at his saber teeth closely; they've disappeared. When his nose goes over the edge, they reappear.

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