I live on the boarder, we cross A LOT, like once a week. Going into the US, you must have proof of rabies for each animal. I haven't been asked for ages (we could almost be on a first name basis, and some are with the dog), but every once in a while you get a piss pot that demands to see it as though you couldn't possibly have it and they shut up when shove a fist full of papers into their hand. I've never been asked for anything more, even from the piss pots. the last time i crossed for the Flooger Fest GTG (about 3 weeks ago), they asked if I had any lamb based dog food with me. My guy is on fish based, so I said no, she smelled the baggies I had with me and agreed they were fish. I would recommend calling them before you leave and see what they say about dog food that week...it changes. If you can ship a larger bag to your destination, awesome. Travel with a smaller sealed bag and if they take it, they take it. I've never, EVER been asked for anything coming back into Canada, but I would suspect that as long as you can prove vaccinations they wouldn't likely hold you up unless the dog looked really ill. You are Canadian and likely have a Canadian vet, so it isn't like you are importing a foreign animal, they were just on vacation with you. I've only ever had a health certificate done when I first imported my guy from the states, and Canadian customs was like 'what? what the hell is that?'. They really didn't care that I was trying to declare my dog.
