Farm animals on the loose in National Parks

I've met lots of domestic animals in the wild in national parks since last year, mostly in Morton, Budawang, Monga and Deua strip.
Most of them are goats and cattles, occasionally deers, luckily no dogs yet.
Around Ettrema Top and Ettrema headwater area, I even met emus 3 times. Thought they were wild at first sight but some research told me there are no wild emus in Morton. Until last week a friend runs a farm in Nerriga told me that there used to be an Emu Farm in St George. Due to some reason the farmer fed up and set loose the big birds. That same friend told me he once witness a very vicious scene along Shoalhaven River where some wild dogs attacking a gang of wild hogs with a mum leading a group of piglets.
I think it would become a bigger problem if no proper control of the issue. They would turn feral, disrupt the fragile eco system, and causing fatal traffic accidents (country roads are usually 80-100km/r)
National Park authorities should already know the problem well, but not sure what actions they take now.
At NSW Police website, it says "If you come across straying livestock on a public road, your first point of contact should be your local council or Local Land Services".
Most of them are goats and cattles, occasionally deers, luckily no dogs yet.
Around Ettrema Top and Ettrema headwater area, I even met emus 3 times. Thought they were wild at first sight but some research told me there are no wild emus in Morton. Until last week a friend runs a farm in Nerriga told me that there used to be an Emu Farm in St George. Due to some reason the farmer fed up and set loose the big birds. That same friend told me he once witness a very vicious scene along Shoalhaven River where some wild dogs attacking a gang of wild hogs with a mum leading a group of piglets.
I think it would become a bigger problem if no proper control of the issue. They would turn feral, disrupt the fragile eco system, and causing fatal traffic accidents (country roads are usually 80-100km/r)
National Park authorities should already know the problem well, but not sure what actions they take now.
At NSW Police website, it says "If you come across straying livestock on a public road, your first point of contact should be your local council or Local Land Services".