It's a scary place with scary people. Advice for travellers from the Australian Dept. of Foreign Affairs and Trade..
"We advise you to exercise caution and monitor developments that might affect your safety in Canada because of the risk of terrorist attack."
"Heavy snowfalls and ice in the winter can make driving dangerous. The wind-chill factor can also create dangerously cold outdoor conditions beyond the thermometer reading."
"The province of British Columbia in western Canada is in an active earthquake zone."
"Skiing, snowboarding and riding skidoos (snow mobiles) on closed trails is unsafe and should not be undertaken.
"Tornadoes can occur in some areas of Canada between May and September."
"Forest fires can occur in Canada"
"All oceanic regions of the world can experience tsunamis, but in the Indian and Pacific Oceans, there is a more frequent occurrence of large, destructive tsunamis because of the many large earthquakes along major tectonic plate boundaries and ocean trenches"
"Beware of bears in forested areas and obtain local advice before setting out on hikes in areas inhabited by bears. Australians are advised to maintain a safe and legal distance when observing wildlife, including marine animals and birds. You should only use reputable and professional guides or tour operators and closely follow park regulations and wardens' advice."
"When you are in Canada, be aware that local laws and penalties, including ones that appear harsh by Australian standards, do apply to you."
http://www.smartraveller.gov.au/zw-cgi/view/Advice/Canada