www.campsaustraliawide.com/ & www.wikicamps.com.au/ list all camping spots and advise if pets are allowed Note even some places that advise they are pet friendly only allow small "Handbag or Powder Puff" breeds. If your furbaby is a large variety it may not be allowed - ring before you get there.
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Possum; AKA:- Ali El-Aziz Mohamed Gundawiathan
Sent from my imperial66 typewriter using carrier pigeon, message sticks and smoke signals.
There is a site that gives the info but you will need to know the council areas along the coast. eg I looked at Great Lakes and picked up several beaches.