The OPP are taking steps to manage the wild dog problem in the city.
Late last week, officers were contacted about a deer that had been injured by a number of dogs in the Laurenson's Lake area.
Police say they had to put the deer down because is was so badly injured.
A short time later, the pack was located and the OPP say they were able to kill three of the animals.
They say the dogs have becoming increasingly agressive over the winter.