To see a kangaroo in your dream refers to maternal and paternal protection. You could express your nurturing and maternal nature. Maybe you are too protective. Alternatively, a kangaroo symbolizes aggression. If the kangaroo is jumping, then the dream is analogous to how you jump from one thing to another. You don’t have the capacity to stick to one thing.
To dream of a kangaroo attacking you indicates that your reputation is in question.