Claudia You know the ol Koala is the last thing you need to worry about here they are quite cuddly and in the wildlife parks often allow visitor to have a cuddle.
The really big danger it the Bananabenderhumanoid which are only found in Queensland, very sneeky criters indeed or the other critters to watch out for

are the Hotairyans often afectionatly known as Yogis or Canberrians, you really got to watch them but we have given them a little teritory to themselves up in the icycold mountains we call that area ACT, unfortunitly they migrate down to the coast in plague porportions in the warmer months.
