Rockingham posties are being targeted by dogs more than any other suburb in WA.
In the past six months, more than 1200 dog-related incidents have been reported nationwide, a five per cent increase on the same period last year.
Western Australia recorded 193 incidents with Rockingham, Wangara, Bunbury and Joondalup the states hotspots.
Despite repeated warnings from Australia Post, the majority of incidents occur when dogs are not properly secured during deliveries.
Almost two-thirds of incidents happen on the street after a dog escapes a property or is roaming freely, with over a third of those incidents involving posties being chased down the street.
These encounters can escalate quickly, with posties suffering injuries including bites, puncture wounds, scratches and lacerations.
A postie's injury after being bitten by a dog. PIC: Australia Post
In more serious cases, posties have been knocked off their vehicles or required hospital treatment.
Australia Post General Manager Safety Russell Munro said dog-related incidents remain a serious and persistent safety risk for posties.
“Posties encounter multiple dogs every day while delivering, and some can pose a real safety risk," Mr Munro said.
"What seems like a routine delivery can quickly escalate, and our posties can’t predict how a dog may react, regardless of breed or temperament.
“Our posties are working hard to deliver parcels safely and on time, and it’s worrying to see the number of incidents increasing."
Citronella spray is now being used as a last-line-of-defense measure and has proven to be effective in 95 per cent of dog-related incidents in the past six months.
“While citronella gives our team members an extra layer of protection, prevention remains the most effective solution,"Mr Munro said.
"If you’re expecting a delivery, make sure your dog is securely contained in another room, behind a locked gate or safely restrained.
"If you’re unable to do so, we encourage customers to consider using a 24/7 free and convenient Parcel Locker as a safer alternative."
Australia Post reports all dog-related incidents to local councils and may suspend deliveries to a property or street where it is unsafe.
Yarloop man fined thousands, rods forfeited over illegal fishing haul
Police uncover 2kg of meth during crackdown on impaired drivers in Mandurah
WATCH: Police release vision of Barragup arsonist
Local landholders encouraged to work together against invasive weed
Wellard family provided temporary accommodation after burst water pipe floods home
Elderly woman taken to hospital after crash on the Kwinana Freeway in Baldivis
Pop-up ice skating rink glides back into Mandurah for winter school holidays
Federal opposition leader Angus Taylor sits down with local business owners in Mandurah
Police search for missing man last seen leaving Rockingham Hospital