The jackal is read as opportunism and life on the margins, taking what others leave behind. In older traditions it also guards thresholds, so it can stand for a passage from one stage to another.
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.