MONTREAL – A new municipal report has sounded the alarm over a dramatic spike in aggressive dog behavior across Montreal, revealing a 41% increase in incidents since 2021. The data serves as a stark reminder that pet ownership is a significant responsibility rather than a mere hobby, as authorities struggle to manage the growing number of canine-related complaints.
In the past year alone, the city conducted 586 investigations into reports of dog bites or aggressive behavior. Consequently, officials took disciplinary action against 268 owners for various bylaws violations—such as failing to use a leash or losing control of their animals—marking a 12% rise in penalties compared to the previous year. This surge is partly attributed to the growing canine population in the city, which has now reached an estimated 160,000 dogs.
As of the end of 2025, the city’s official registry has designated 110 dogs as “dangerous.” Experts point to a lack of proper training and socialization as the primary drivers behind this trend. Statistics show that the neighborhoods of Hochelaga-Maisonneuve, Rosemont, and Côte-des-Neiges have become the hotspots for these incidents, recording the highest volume of complaints.
Professional dog trainers have highlighted environmental factors as contributing to the problem. Rhiannon Horan, a local trainer, noted that overcrowded parks and a lack of open spaces can cause dogs to become stressed and reactive. Fellow trainer Jeremy Cloutier emphasized that owning a dog is a lifelong commitment, not a short-term trend. He urged that owners must be capable of controlling their pets in public and suggested mandatory awareness classes for prospective owners to ensure they understand the commitment required.
In response to the growing concern, the city hosted several outdoor workshops last year, which saw participation from approximately 450 pet owners. Municipal authorities plan to expand these preventative measures and educational programs throughout the coming years to ensure public safety and foster more responsible pet ownership.
