A 47-year-old man has died and his wife is fighting for life after they were attacked by their pet deer in north-east Victoria.
McDonald, a farmer who did odd jobs at other properties in the area, died from his injuries at the scene shortly after the attack.
"Unfortunately, the injuries to the male were fatal and the injuries to the female were life threatening", acting Senior Sergeant Paul Pursell told reporters.
Mrs McDonald is now in a critical condition in hospital with life-threatening injuries.
A local ambulance officer nearby was first on the scene.
The stag was a cross between a red deer and an elk, Pursell said.
"The family is just devastated".
"They will be very aggressive and territorial", Mr Howlett said.
The couple's son and daughter have travelled to Melbourne to be with their mother in hospital.
Local media said that the injured woman was helped from the deer's pen by her teenage son.
"They'd come in the shop every second or third day".
The family has lived at the property for between 10 to 12 years.
"It's tragic but not unheard of", Mr Howlett said. "We didn't know what was happening".
According to ABC, Steve Garlick, the chairman of the deer management committee at the Australian Deer Association, said it was extremely unusual for a deer to kill a person.
Police said it was believed the couple had been attacked by a pet deer on their property.
"The majority of encounters most people will have with deer is with deer fleeing in the opposite direction."