As of August 1st 2024 regulations to travel to the US with your pet are changing - double check before travel to avoid delays.
If you are planning to travel, please start with contacting the CFIA. Their phone number is (289) 247-4100.
This information is taken from the CFIA website:
Pets must meet specific requirements when travelling to Canada or another country. It is your responsibility to review all the requirements for your situation.
Some requirements must be completed at specific times and if not completed correctly or on time your pet may not be eligible to travel and be refused entry.
Most pets travelling from Canada to another country will need an export certificate issued by a licensed veterinarian and endorsed by an official Canadian Food Inspection Agency (CFIA) veterinarian. It is mandatory to obtain CFIA endorsement of an export certificate before the animal(s) leave Canada as the CFIA cannot endorse or issue a certificate if the animal(s) is/are no longer in Canada.
The requirements for pets travelling to another country are very specific and different for each country. As a pet owner, you must plan ahead to ensure you have enough time to meet any testing, vaccination or treatment requirements and obtain the necessary certifications. Some countries may also require owners to obtain an import permit in addition to an export certificate. All official documents must be completed accurately.