Is Canada much colder than the US?
Of course it is - Canada is closer to the North Pole than America is.
some areas are colder (especially in the arctic regions), but some are actually quite temperate (southern BC). Winter is winter though.
The far north of Canada is colder than the "lower 48" states of the USA. But Alaska is as cold as northern Canada. Both Canada and the USA are large countries, with great variations of climate and weather across those two countries.
USA is a mighty country which competes in everything. Florida is warmer then any place in Canada, but Alaska is colder then any place in Canada as well, so we beat them in both categories. We are, in essence, superior to the Canadians.
I doubt places in Canada get much colder than in the US state of Alaska so the answer is no. Sus scrofa (Wild Boar) are found on every continent except Antarctica. I do not if any are found in Canada but they may be. In North America they are an invasive species.
90% of Canadians live within 100 miles of the US
it probably depends on what part of canada youre in
Right now in my area of Ontario, it is a -15C with a wind chill of -27C That is 5 F and -17 F You can keep your groceries outside your window and it will not spoil.