Ontario's Legacy
Since 2005, Ontario has had a province-wide ban on Pit Bull-type dogs. However, the enforcement and specifics have softened recently with Bill 132 amendments, particularly regarding impounded dogs. Still, the ban remains on the books.
Quebec and BSL
Montreal famously passed a ban several years ago but later repealed it in favour of "Dangerous Dog" legislation that targets behaviour rather than breed. If you are travelling through Canada, always check the municipal bylaws of your destination city.