Helle, from the DPI:

What is a restricted breed dog?

Restricted breed dogs are five specific breeds of dogs. They have not attacked a person or animal or displayed signs of aggression, but they are considered a higher risk to community safety than other breeds of dogs.

The following dog breeds are restricted:

American Pit Bull Terrier (or Pit Bull Terrier)
Fila Brasileiro
Japanese Tosa
Dogo Argentino
Perro de Presa Canario (or Presa Canario).

Only the American Pit Bull Terrier (or Pit Bull Terrier) and one dogo Argentino is known to be in Victoria.