Feral pigs on the rise in Victoria

Environment authorities are concerned about booming feral pig populations in southwest Victoria.

Surveillance and trapping undertaken by Forest Fire Management Victoria has confirmed feral pig populations are becoming established in several new locations in the southwest, the department says.

"We believe the origin of these newly confirmed populations is most likely through importation and illegal release," Forest Fire Management Victoria Officer James Downie said on Tuesday.

"We are seeing evidence of feral pigs that have had their ears cut off consistent with the theory that some pigs were released with the intent of breeding up to allow for increased hunting opportunities."

While hunting pest animals is permitted in some state forests, cutting off pigs' ears and the use of dogs to chase, hold and attack pigs is prohibited under the animal cruelty act.

It is also illegal to import, keep, transport or release feral pigs within Victoria.