Otway Ranges Large Black Cat

My husband and I were traveling through the Otway Ranges about and hour out of Apollo Bay in November last year when we both saw a large black panther like animal on the side of the road. It leapt up the embankment and into the bush and disappeared. It had a very long sleek erect curled tail, and looked just like a panther. We were both amazed and couldn't believe what we saw,