A pit bull is being hailed as a hero by police after the dog saved its owner’s life during an attack at an Edmonton home on Tuesday.

Four-year-old pit bull Mercey jumped into action after a group of three men and a teenaged boy pushed their way into the apartment of a 30-year-old female victim.

Mercey jumped to protect her owner after the men allegedly became violent.

The dog suffered from life-threatening injuries after she was attacked with what police describe as a machete.

“In order to save the dog, she required surgery,” Staff Sgt. Randy Wickins explained.

Mercey is currently recovering at a local emergency vet clinic as local police officers pitch in to help cover the vet bill.

Police say the attackers were acquaintances of the victim and have arrested three suspects connected to the attack. All three face several charges including assault and cruelty to an animal.

Officers are still searching for a fourth suspect, 19-year-old Dylan Machiskinic, and urge the public to contact police with any information regarding his whereabouts.

With a report by CTV Edmonton’s Bill Fortier