As of November, 2016, Canadian citizens travelling abroad need a valid Canadian passport. Similar provisions already existed for Italian citizens. Therefore, if you are a dual citizen, both Canadian and Italian, and want to travel between Italy and Canada, you will need to have BOTH passports for your trip. Be prepared!
For more info on the Canadian passport provisions, please visit http://www.cic.gc.ca/english/visit/dual-canadian-citizens.asp