This could spread to the USA if Canada bans cabin pets. Even if you have a larger dog breed, you might want to fly home with your next puppy.

on canada.com
http://www.canada.com/business/Doctors+call+Canada+wide+pets+riding+airplane+cabins+What+think/5294610/story.html#ixzz1VyUtHesy

If you look at the link, there is a place to vote yes/no for allowing dogs & cats in the cabins. Please go to the link, and VOTE!