He said the council would impound any dog that it had reason to believe had been involved in an attack.
"Impoundment removes any immediate risk of further harm as the council completes an investigation.
"The council spent approximately 15 animal management staff hours on patrols and the seizure of the suspected dogs," Newman said.
The Auckland Council continues to adopt out 100 per cent of dogs that end up in its shelters.
Manukau has the highest number of euthanased dogs of any shelter across the Auckland region.
Newman said it was difficult to comment further while the council completes its investigation and undertakes a prosecution.
"But I want to thank Auckland Council's Animal Management staff for their work, as well
as members of the public who have been vigilant in reporting animal attacks and roaming during recent weeks," Newman said.
To report dog attacks and all barking dog complaints, call the Auckland Council on 0800 462 685.