The correct place to get your information would be CBSA or the CFIA.
Use this link:
http://www.inspection.gc.ca/plants/i...1300127627409#
Dogs for personal use (not commercial dogs or rescue groups) require a rabies vaccination if they are over 3 months of age. Those younger than 3 months and service dogs accompanying their owner are exempt. If the dog is coming from a rabies free country, then a general health certificate from a vet may suffice.
I've heard rumblings that CFIA may start requiring import permits for ALL dogs because the rescue groups have been trying to circumvent the requirements by sending random people to pick the dogs up and claiming that they are personal when they are really commercial, so you may want to double check that depending on when you're going.
As far as claiming the animal on your declaration card, always make sure that you check the Food, Plant or Animal question to indicate that you have an animal, and declare the proper value of the animal in the box on the bottom of the card. Be honest and have receipts. Nobody wants a dog to get seized.