Tracey - So sorry no sign of them yet. I don't know how far afield your son looked but they can make tracks when they are running frantically from a threat (and then be lost) so I would look far and wide. Each day that goes by is much more worrisome - days ago the odds would have been better but...
This sounds pretty worrisome. 5 days is a long time. A thorough and far reaching search may reveal them somewhere in need of help.
Once when my roo was attacked by a fox (a neighbor saw it happen and broke it up) he "disappeared". I searched and searched the same day, calling his name, my...