Jung, like Freud sees the unconscious a the mind's way of dealing with the realities of conscious living. However, he differs from his mentor in that he does NOT believe that the subconscious mind is only instinctual or sexually based. Instead, Jung believes that dreams are the mind's way of attempting to communicate a solution to a problem the conscious mind is facing. Therefore, in regard to the 'lion' that you are referring to, it would depend, per the book, upon what a 'lion' represented to YOU specifically and what the lion was attempting to do and more importantly how you FELT during the dream in regard to the lion.