Brad, I really disagree with you, I have yet to find a commercial tourism site without big holes in their coverage.
IMO the best coverage for Canada is via provincial tourism websites.
www.google.ca is where to go to do your searches. When you click on the circle for 'pages from Canada' you get answers faster. So, go to google.ca, click on that circle and use 'name of province' Thus, with 'Alberta tourism', you should get
http://www.cd.gov.ab.ca/
For crossing the border nothing beats the government website of Canadian Border Services Agency.
http://www.cbsa-asfc.gc.ca/travel/visitors-e.html To be sure you may find the logic of google faster than items in bureaucratic logic, but the facts are at the government website.
I strongly prefer to shop locally, unless I can take my garden produce with me. To me one learns lots from talking with people in stores. & nothing beats getting really fresh vegetables at the local market. Yes, I know, prices in Alaska are much higher, but what in the world do you gain by shopping at a superstore in the US., IMO, too many chemicals. I will grant you that finding local meat and being able to check out the growing standards is a challenge. I try. I also find I pick up on local cuisine, if I try out local restaurants.
Now,
Mile Post, which comes out annually is the one source that many visitors agree is really essential for going to Alaska. I've seen debates and tips at the neighbors on where to buy that the most cheaply. For, one, amazon.com.
Now, to pets. What's happening worldwide health wise is always important to pets. Pet food can be confiscated at the border going either way. When avian flu was a world wide thing, the pet food question was asked more often. This year, pet food itself is a mega, mega story on this continent. You can bet your bottom dollar questions about pets will be asked much more often. Canadian regulations say that your pet must be in good health. Cover yourself by following my vets recommendation and getting a health certificate just before you go. & get your pet on a diet you can buy on either side of the border, including Alaska. If in doubt, sit on the phone waiting for your turn to get through to all the customs points.
There are many regulations, no site can ask about everything with everyone. They do it in rotation. Sometimes they do thorough search. If you are that one, accept it. They are professionals with a job to do. As some say, take off the sun glasses, turn off the engine. Comply with their requests.
& enjoy your trip.