I don't think it's VCA rules about microchipping anymore - though they've probably had them a while, it's more like Vic State Government Law. Flouting that is another story.
Ie with all this problem of dangerous dogs, they are being more strict about dog ID.
Ie basically the rotti man is not allowed to sell you a puppy that is not microchipped - as best I can tell.
Microchipping FAQs - Department of Primary Industries
Q: Do all cats and dogs now have to be microchipped?
A: Yes, microchipping is now compulsory for all cats or dogs which are being registered with a council for the first time and councils also have the power to require compulsory microchipping of all cats and dogs housed. Check with your local council to see if microchipping is compulsory for all cats and dogs. Additionally cats and dogs sold or given away from any Domestic Animal Business (Pet Shop, Commercial Breeder or a pound or shelter) must be microchipped from 1 December 2005.
Microchip Details now needed in Cat/Dog Sale Advertisements - Department of Primary Industries
Permanent Identification of Cats, Dogs and Horses - Department of Primary Industries
Legislation for the Welfare and Management of Domestic Animals - Department of Primary Industries
The act (law) says
That councils are not allowed to register a dog (or cat) unless it has been microchipped (or has a note from the vet to say it can't be and some other acceptable permanent id has been used).
And you have to register your dog with the local council "where the animal is kept". I don't know what that means for tourists eg grey nomads and homeless people.
Regulations - see part 3 for microchip stuff. I'm having trouble figuring out what it means. I hate vic laws.
DOMESTIC ANIMALS REGULATIONS 2005