All you need to enter Canada is a valid drivers license (no DUI's) no more than 5 gallons of extra fuel, no firearms, unless you have an Ont. hunting license. It helps to bring a copy of your birth cert. if you have not entered Canada before. Pets are supposed to have paperwork, although we have never been asked to provide. Minimum amount of alchohol! And a good attitude and you will sail through. You will get more questions on your way back into the states!
The pic in my avatar is in Canada, in case anyone cares.