Beeripmo Walk, Reglan
Reglan, VIC 3373
Dogs (and probably cats) are only permitted in State Forests (on leash) and not within State Parks.
Before You Go Exploring in Victoria
In Victoria, local councils determine and police laws on where cats are allowed.
Cats need to be microchipped and registered with your local council. It is also likely that cats need to be desexed to be registered (unless you are a licensed breeder).
Details about Victorian State Forests can be found here. Unlike other states, it appears that dogs (suggesting cats too) are not allowed in most Victorian State Parks.