This is taken from that page. Looks like you can, as long as they are properly vaccinated. (The US is not considered rabies free, so these guidelines apply):

Importation of Pet Dogs
Section 2 - Pet dogs three (3) months of age or over
from countries where rabies is present
(or not recognized officially rabies-free by Canada)
The pet import requirements outlined in this page are current as of 2006-1- 24 .


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2.1 Dogs may enter Canada if accompanied by a valid rabies vaccination certificate issued, in either English or French, by a licensed veterinarian(2), which clearly identifies the dogs and shows that they are currently vaccinated against rabies. This certificate should identify the animal, as in breed, colour, weight, etc., plus indicate the name of the licensed rabies vaccine used (trade name), serial number and duration of validity (up to 3 years). Please note that if a validity date does not appear on the certificate, then it will be considered a one year vaccine.
We do not impose a waiting period between the time the animal is vaccinated for rabies and the time the animal is imported into Canada.

2.2 If the provisions of 2.1 are not met, an inspector will order the owner to have the animals vaccinated for rabies within a period of time specified in the order and to provide the vaccination certificate to an inspector, all at the owner's expense.
Note: Rabies vaccination or certification is not required if the dogs are less than three (3) months of age.

(1) An official government veterinarian is a veterinarian who works for the government veterinary service in the country of origin.
(2) A licensed veterinarian is a veterinarian who is licensed to practice veterinary medicine in the country of origin.