Local By-Laws May Require You To Register Your Dog With The City.
Find out the legal restrictions you must abide by within your local community. 

For example: The Province of Ontario requires a dog to be vaccinated with the rabies vaccine.
Most municipalities in Ontario require a dog to be registered (this varies by municipality). When registered you will receive a dog tag. It is our understanding that in Quebec, dogs must be microchipped. 

TIP: You can simply ask some friends on social media or your vet what is required where you live.
Most cities have a section regarding pets on their website.