Owners of puppies and kittens must microchip their pet by 12 weeks of age or when they are first sold (whatever comes first) and register and pay the registration fee by the time their pet reaches six months of age. This is to ensure pets can be reunited with owners should they become lost. 

Owners can use the pet registration R2 form to register their cat or dog on the NSW Pet Registry as required under the Companion Animals Act 1998.