"Nor did Alice think it so very much out of the way to hear the Rabbit say to itself, 'Oh dear! Oh dear! I shall be late!'" She reflected that she might have found it strange, but at the moment everything seemed quite natural to her. It was only later that she realized the oddity of the situation.
When the Rabbit took a watch from its waistcoat-pocket and hurried away, Alice was surprised because she had never seen a rabbit with a waistcoat-pocket or a watch before. Filled with curiosity, she ran after it and just caught a glimpse as it disappeared down a hole. This encounter marked her beginning exploration into Wonderland's curious world.