This is an interesting dream. The building represents your physical self. That you are with other people, and yet do not feel part of them, indicates that in some way in your life you feel abandoned. The staircase itself indicates change and transformation. That it is a switchback indicatges to me that this change and transformation is not progressing in a straight line/logical sequence. It has some "twists and turns" to it. Going up the stairs indicates that you are moving into a higher level of understanding. Many new thoughts are beginning to come to the conscious level. The lion in your dream symbolizes personal strength and power - great strength and power. The lion is a leader, indicating that you are eitherin a leadership position, or are moving into one. You have power over the people around you. That you are afraid of being attacked by the lion indicates that you have obstacles to oversome. There may be some issues here that you are repressing, and that this is what you fear. The fact that you have the courage to go up the stairs - to accept your new wisdom - and that suddenly the lions - your repressed fears - have moved to the ground floor is telling. Tigers are also about power - the personal power that you have to use in situations in your life. I would say that this dream is telling you to no tbe afraid to take more of a leadership role in your life. That you fear that the lions and tigers will attack you could mean that you are afraid of your own emotions. I might try asking for another dream, in which you ask either a lion (singular) or a tiger (singular) what you need to know to deal with this issue. My feeling is that they are your ally. :)