Cape Byron's last remaining goat is missing.
'Wategoat' shot to fame earlier this year when she made a mockery of an elaborate rescue mission by escaping from the base of a cliff without assistance.
She's been on the run for about 10 years, after avoiding capture during a muster that relocated the rest of the Byron herd.
But Lawrence Orel, from the National Parks and Wildlife Service, says she hasn't been spotted for about six weeks.
"The staff, like all of the locals and certainly many of the visitors, have come to recognise (her) as part of that experience at Byron," he said.
"People appreciate seeing these sorts of things and become attached to them as well.
"But certainly... the RSPCA clearly did identify that the animal was aged and was certainly nearing the end of its expected lifespan.
"At this stage we haven't seen (her) for some time and the possibility is, given that the animal was assessed as being quite old and nearing the end of its life, that that may have eventuated."