Plot hole: Kerchak is mad with Tarzan because he showed Jane, Porter and Clayton to the gorilla's current location. Yet he does not move the group even though he obviously knows they're no longer safe there.
Suggested correction: He does actually move the group later on in the movie. Then they get ambushed by the hunters and he is killed.
Factual error: The weight of an elephant is nowhere near that of a large cargo ship so even if Tantor was able to climb up the side of the ship the ship shouldn't have moved.
Suggested correction: Is there different rules in the cartoon world and live action? Animals getting smashed flat then getting up like nothing happened.
It would entirely depend on the specific cartoon. Not all cartoons have a consistent logic. Ex. Sure, a character might get flattened then get back up in a Looney Tunes cartoon... but you'd never see that happen in "Akira," which is also a cartoon. If memory serves, "Tarzan" follows a loose realism when it comes to things like logic and physics, so a mistake like this would be valid.