Vegans have been putting pressure on meat eaters with graphic stickers on products across Sydney supermarkets.
Some of the stickers have been made to look like cigarette pack health warnings, while others carry animal rights messages, and include the pro-vegan website SavePoppy.com.
Anonymous for the Voiceless is the organisation that is reportedly behind the campaign.
The pressure comes alongside a commitment by the Victorian government to update animal welfare laws and acknowledge sentience - feelings of pleasure, fear and pain - in animals.
The RSPCA Victoria, meanwhile, said that the formal recognition in animal welfare laws that animals feel pain should not affect Australian farmers.
“Other jurisdictions have introduced sentience in their legislation and RSPCA Victoria has seen no evidence that industries that work with animals have been negatively impacted,” RSPCA chief executive Liz Walker told The Weekly Times.