Depending on the countries you visited recently, the quarantine period alters. NZ is more relaxed than Aus. I think a 5 day quarantine is possible in NZ but one month is the shortest in Aus, although it can be spent on board the yacht while anchored out with weekly visits from the vet. The best option to bring a dog into Aus may be to travel to NZ, quarantine on board for a 5 days, spend a couple of months there then no quarantine is needed on entering Aus. It seems the rules change a bit and it very much depends on If you have recently been in certain countries recently before arriving in Australia
. You would need to speak with AU quarantine to work out a plan prior to arrival.