Leon skipped along the sunlit forest trail. A happy hum filled his chest. Just a moment ago, a grown-up had told him a very special word. It described something amazing about animals, something clever. He loved learning new things. Then, a quick flash of brown fur zipped past his feet – a squirrel! Leon watched it scamper up an oak tree, disappearing into the leaves. When he looked back, the important new word had completely vanished from his mind. He frowned, trying to catch it, but it was gone.