"Midland Detectives are investigating the animal cruelty shown in footage supplied to police," Western Australian police told news.com.au
"Investigations into this are continuing."
A police spokesperson described the actions in the video as "shocking, cowardly and cruel".
RSPCA chief inspector Amanda Swift urged the public to dob in the people responsible for this cowardly attack.
"I would ask … the people who know the people in the video and whoever has taken it and shared it to come forward and let us know who they are," she told the media outlet
"It's just the most abhorrent cruelty again to an iconic animal."
The footage has spread around social media, with people disgusted by the cruel attack.
"People like that should be put down. We don't need trash like that," one person said.
"Omg when the poor thing put its paw up to defend itself," another wrote.
One added: "Absolutely disgusting. Made me feel physically sick."