Traditionally, jackals are associated with death.
In ancient Egypt, the jackal was thought to be the guide to the land of the dead.
The Egyptian God Anubis had the body of a man and the head of a jackal and passed judgements on the souls of the dead, so it is thought that dreaming about a jackal could signify that your soul is being judged.
Jackals are known for being sneaky and evasive, so it could be your dream is trying to point out something that is hidden from you?