Other mistake: Whenever Verne is inside his shell, he has a tail (and references to it "tingling" are made throughout the movie), however, when he is out of his shell he has human-style buttocks and no tail.
Other mistake: When Lou climbs the tree, to tear off some bark to eat, the bark should stay on his belly but it is on his back when the kids are complaining.
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Suggested correction: He rolls backwards and his back grabs the bark off the tree.
