The police have been found to be justified in using force to arrest a man who was threatening to hurt himself or officers.
The Independent Police Conduct Authority says the police complied with the law and police policy when they were called to a domestic incident last May.
The man was dousing himself with petrol and threatening to set himself alight when officers arrived at the property.
He was bitten by a police dog before a struggle with officers left him with a punctured lung and fractured ribs.
Judge Sir David Carruthers said the dog's involvement was a necessary use of force and the officers' use of force to restrain the man was reasonably necessary.
The IPCA has witheld the man's name and details of where he lives.