One thing I noticed is right when Littlefoot's mother saves the two of them, Cera runs off to her family but Littlefoot is still with his mother. We never actually see the two of them get separated. Now we do see Littlefoot's grandparents getting separated when the ground starts to rise and we do see Cera almost falling when the ground caves in, but nowhere do we see the moment where Littlefoot and his mother are split from each other. It seemed weird to me that he was with her when she saved him, but then five minutes later he had lost her.
Now this could be explained a number of ways. Littlefoot could have run ahead of his mother without realizing it since she was badly injured. She may have told him to go hide somewhere while she tried to find his grandparents. Whatever the reason, we never actually see it happen.
