Unfortunately, hunting of pigs with dogs is a legal activity in some parts of Australia, with laws varying between states and territories. In some jurisdictions, dogs can be used to flush out or locate feral pigs but they are not permitted to bring them down.
The RSPCA accepts that in some circumstances there is a need to control introduced animals such as feral pigs, but we firmly believe that any control measures used must be justified, effective and humane. This is not the case with hunting pigs with dogs. Recreational hunting of pigs does not have any significant effect in reducing the agricultural or environmental impacts of these animals, pig hunters do not apply their activities in a coordinated manner nor do they target their efforts in ways that would reduce impacts, and pig hunting results in unnecessary and considerable suffering for both pigs that are hunted and the dogs that are used to hunt them.
The RSPCA is opposed to recreational hunting, or the act of stalking or pursuing an animal and then killing it for sport, due to the inherent and inevitable pain and suffering caused.
See the article What happens when dogs are used to hunt feral pigs? for more information.