Hi I am one of those who have had the experience of finding the remains of a kangaroo that was eaten by something other than a fox or a dog.
October last year I discovered the half eaten remains. It had puncture marks in its neck and it appeared to have a broken spine ,what ever it was that had attacked it had very neatly eaten all the internal organs and cleaned the ribs of all flesh leaving it intact. The following day the kangaroos legs had been stripped bare but the bones were intact.
Is this the work of a big cat?