DINGOES have savaged tourists in three separate incidents on Fraser Island in the past eight days.
The Department of Environment and Resource Management warned tour operators, residents and visitors to exercise extreme caution while visiting the world heritage site.
Unconfirmed reports suggest the latest attack, which occurred on Monday, involved dingoes from a pack repeatedly biting a tourist.
DERM Great Sandy regional manager Ross Belcher said several campers have been bailed up or bitten by dingoes at Fraser Island's K'Gari campground and other nearby camps in the past fortnight.
"A female camper was bitten on March 20, and two male campers have been bitten on separate occasions on March 22 and 28, while on March 21 and 26 dingoes circled and tried to bite people," Mr Belcher said.
"Two of the incidents involved four or five dingoes."
He said reports to QPWS had showed an increase in number and seriousness of incidents recently.
Packs of dingoes at K'Gari and nearby areas have also ripped tents and stolen items from campgrounds.
Rainbow Beach Adventure Company co-owner Ben Kelly confirmed Monday's victim was on one of his tours.
He said the tourist was attacked at K'gari Aboriginal Campground while touring the island with a group of backpackers.
"Nomads had an attack last Tuesday and the rangers were informed about it," Mr Kelly said.
"There was another attack this week - the rangers were warned the dingoes were dangerous."
DERM urged visitors to Dundubara - Maheno area, in private camps and beach camping zones to follow Queensland Parks and Wildlife Service dingo safety advice and avoid interaction with dingoes at all times.
DERM said rangers had been camping at K'Gari campground since March23 and will continue to do so until the risk has been reduced.