According to the residents of Isdell Place, the dog – a female labrador/mastiff cross – regularly wanders the street.
The dog attacked two people on two separate occasions, on November 22 and 23.
City of Mandurah chief executive Mark Newman said they received one other report regarding the dog wandering in the street, prior to the attack.
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READ NOW“Dog attacks occur far too frequently and it is the responsibility of dog owners to register and effectively control their animals,” he said.
“The consequences for dog attacks can be severe, not only for the victim but also for the owner of the attacking dog, who may be liable for significant vet and medical bills, fines and prosecution, and in some circumstances.”
Mr Newman said the City of Mandurah encourages responsible pet ownership and actively works with the community to educate and inform about matters like dog registration and reporting incidents, including conducting a whole-of-city door knock earlier in the year.
In the first quarter of the 2013 financial year there were 39 reported dog attacks, before they almost doubled in 2014 to 63 reported attacks.
During the first quarter of this year, they settled back down to 56 reported attacks.
In extreme cases, dog attacks can lead to the dog being declared dangerous or to be put down.
The owner could also face fines of $10,000 or 12 months imprisonment.