The opossum plays dead when threatened, and dream books read this as a strategy of freezing or pretending in order to get through a danger. It also stands for clever survival and adaptability.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.