Last updated: April 2026. This guide has been updated to reflect current CDC dog import requirements including the microchip requirement, CDC form validity for frequent travellers, and expanded guidance on returning to Canada with your pet.
How to Bring Your Dog or Cat into the U.S. from Canada
Traveling between Canada and the United States with a pet is common, especially for families, frequent travelers, and seasonal residents. While the process is generally straightforward, there are specific federal, state, airline, and border requirements you must meet to avoid delays or denial of entry. Understanding these rules ahead of time can make the crossing smooth for both you and your pet.
This guide focuses on the most common companion animals — dogs and cats — and highlights special considerations for Canadian snowbirds who spend extended periods in the US.
General Entry Rules for Pets Entering the U.S.
The United States does not have a single universal pet import law that applies to all animals in every situation. Instead, requirements depend on the type of animal, its age, health status, and the mode of travel.
At a minimum, pets must appear healthy upon arrival. US Customs and Border Protection officers may deny entry if an animal shows signs of illness that could pose a public health risk.
Requirements for Dogs
Dogs entering the US from Canada are subject to rules enforced by the Centers for Disease Control and Prevention (CDC). These requirements were updated in 2024 and have continued to evolve, creating more structure around age, microchipping, documentation, and travel history.
As of 2026, all dogs entering the US must:
- Be at least 6 months old
- Be microchipped with an ISO-standard chip readable by a universal scanner
- Appear healthy upon arrival
- Have a completed CDC Dog Import Form receipt
The microchip requirement is one that catches many travellers off guard. If your dog is not already microchipped, arrange this with your veterinarian well before your travel date — most vets recommend allowing a few weeks for the chip to settle before travel. Bring documentation of your dog’s microchip number with your other travel documents.
Canada is classified as a low-risk country for dog rabies, which means dogs entering directly from Canada do not need a CDC-issued rabies vaccination certificate. However — and this is important — most US states including Florida, Arizona, California, and Texas require proof of current rabies vaccination for all dogs regardless of federal rules. A border agent acting on behalf of state authorities can deny entry if you lack this proof. Always travel with your dog’s current rabies vaccination certificate even if federal requirements don’t technically mandate it.
Additional points to be aware of:
- Dogs imported for resale, adoption, or transfer of ownership may require extra documentation
- Puppies under 6 months old are not permitted to enter the US — there are no exceptions for family pets
- Dogs that have recently been in high-risk rabies countries are subject to stricter entry requirements
Even though Canada is low-risk, carrying a valid rabies certificate and recent veterinary records is strongly recommended to avoid complications. For more information see the CDC’s web page on bringing a dog into the US.
Good news for snowbirds and frequent travellers: The CDC Dog Import Form receipt is generally valid for up to six months, provided your dog has not visited a high-risk country during that period. This means you may be able to use the same form for multiple crossings within a single snowbird season rather than completing a new one each time.
Requirements for Cats
Cats entering the US from Canada face fewer federal restrictions than dogs.
The CDC does not require proof of rabies vaccination for cats at the federal level. However, many US states require cats to be vaccinated against rabies and may request documentation at entry or during veterinary visits.
While not federally required, it is best to travel with:
- A current rabies vaccination certificate
- A general health certificate from a licensed veterinarian
These documents can be especially important if you plan to stay in the US for an extended period or need veterinary care while traveling. Some US states and municipalities enforce their own cat vaccination requirements once you establish a temporary residence, so having documentation ready avoids complications.
Requirements for Other Animals
Requirements for pets other than dogs and cats vary significantly depending on the species. Small mammals such as rabbits, guinea pigs, and hamsters may be permitted to enter the US, but they are often subject to state laws and airline policies rather than clear federal guidance. Some species fall under regulation by the US Department of Agriculture or the Fish and Wildlife Service.
Birds, reptiles, and exotic animals typically face more stringent controls. These animals may require import permits, specific health testing, or quarantine upon arrival. Certain species are prohibited entirely due to disease prevention concerns or environmental protection laws.
Before traveling with any non-traditional pet, review federal requirements for your specific animal, confirm state and local laws at your destination, and verify transportation provider policies. Failure to meet these requirements can result in denied entry or seizure of the animal. Check out the CDC’s web page on bringing animals into the U.S. for more details.
Health Certificates and Veterinary Documentation
A health certificate is not required by US federal law for pets entering from Canada for personal travel. That said, airlines, states, and landlords often require one.
A standard health certificate typically includes:
- Confirmation that the pet is free from contagious diseases
- Vaccination history
- Owner information and travel details
- Veterinarian signature and license number
Most airlines require health certificates issued within 10 days of travel. If you are driving across the border, the requirement is more flexible but still advisable. Given that rabies certificates are required by most US states even when not federally mandated, it is always worth having a complete set of veterinary documentation with you regardless of how you’re traveling.
Airline and Transportation Rules
If you are flying with a pet, airline rules may be stricter than government requirements. Airlines often impose limitations related to breed, size, crate dimensions, and seasonal travel due to temperature or safety concerns. Documentation requirements may also be more restrictive, with some airlines requiring advance submission or approval.
Before booking travel, review your airline’s pet policy carefully to understand crate specifications, whether your pet can travel in the cabin or must fly as checked cargo, and any deadlines for submitting health documents.
If you are driving across the border, transportation rules are generally more flexible. Pets should be safely restrained during travel and remain easily accessible in case a border officer requests an inspection.
Special Considerations for Snowbirds
Canadian snowbirds who spend weeks or months in the US with their pets should plan beyond border entry alone.
Important considerations include:
- Ensuring rabies vaccinations remain valid for the entire duration of your stay — including your return date
- Bringing copies of veterinary records in both digital and paper formats
- Confirming your dog is microchipped before departure
- Completing the CDC Dog Import Form before your first crossing of the season
- Identifying a US veterinarian near your winter residence in case of emergencies
Some US states and municipalities enforce licensing or vaccination rules once you establish a temporary residence. Proof of vaccination may be required if your pet needs veterinary care while in the US.
For snowbirds who prefer not to handle long-distance pet travel themselves, Cross Country Valet permits pets to travel in the vehicle during our standard door-to-door snowbird driveaway service. If you’re having your car driven to Florida, Arizona, or another snowbird destination, your pet can travel with the vehicle rather than in the cabin of a flight. Get in touch to discuss your specific situation.
Returning to Canada with Your Pet
Planning your return to Canada is just as important as preparing for entry to the U.S., and it’s a step many snowbirds don’t think about until they’re at the border.
For dogs returning to Canada, the CFIA requires a valid rabies vaccination certificate for dogs over 3 months old. The certificate must:
- Be written in English
- Identify the breed, sex, colour, and weight of the dog
- Specify the duration of immunity and the trade name or serial number of the vaccine used
- Be signed by a licensed veterinarian
Critically, ensure your dog’s rabies vaccination remains valid for the entire duration of your US stay, including your planned return date. If your vaccine expires while you’re in the US for the winter, your dog will need a booster from a US veterinarian before you can return to Canada. Plan ahead and confirm expiry dates before you leave.
For cats returning to Canada, the CFIA also requires a rabies vaccination certificate for cats over 3 months old. The same documentation standards apply as for dogs.
For the most current Canadian re-entry requirements, consult the CFIA’s pet import tool before departure.
State and Local Regulations
While federal rules govern entry into the United States, individual states and municipalities may enforce additional pet requirements once you arrive. These rules often relate to rabies vaccination, local licensing, or restrictions on specific breeds or animal types.
State and local regulations are particularly important for travelers planning extended stays or seasonal residence. Checking destination-specific rules in advance can help you avoid fines, registration issues, or difficulties accessing veterinary care.
Tips for a Smooth Border Crossing
- Complete the CDC Dog Import Form before you leave — don’t wait until you’re at the border
- Carry your dog’s microchip documentation alongside your other travel documents
- Always travel with a current rabies certificate for both dogs and cats even when not federally required
- Keep all veterinary records organized and accessible, both digital and paper copies
- Ensure your pet wears a collar with up-to-date identification
- Plan travel with your pet’s comfort in mind
- Avoid peak crossing times when possible
- Confirm your rabies vaccination expiry dates cover both the U.S. stay and the return to Canada
Heading down to the U.S. this winter? Learn more about our car transport service for snowbirds.
FAQs About Bringing A Pet into the United States
Do I need a rabies certificate to bring my pet from Canada into the U.S.?
Technically, the CDC does not require a rabies certificate for dogs or cats from low-risk countries like Canada. However, most US states — including Florida, Arizona, California, and Texas — require proof of rabies vaccination for all dogs, and many states require it for cats as well. Always travel with a current rabies certificate regardless of federal rules to avoid complications at the state level or during veterinary visits.
What changed for dogs entering the U.S. in 2024?
The CDC updated its dog import rules in 2024. Key changes include: all dogs must now be at least 6 months old, all dogs must be microchipped, and all dogs must have a completed CDC Dog Import Form receipt. Additional documentation may be required for dogs entering for resale or adoption, or if they have recently been in high-risk rabies countries.
What is the CDC Dog Import Form and do I need to complete it?
Yes, all dogs entering the US must have a completed CDC Dog Import Form receipt. The form is completed online and you receive a digital receipt that you present to border officials or airline staff. For dogs from low-risk countries like Canada, this form is generally the main documentation requirement beyond the microchip and healthy appearance. The receipt is typically valid for up to six months, so snowbirds may be able to use the same form for multiple crossings within a season.
Does my dog need to be microchipped to enter the U.S.?
Yes. As of 2026, all dogs entering the US must be microchipped with an ISO-standard chip readable by a universal scanner. This is a requirement that many travellers overlook. If your dog is not microchipped, arrange it with your veterinarian well before your travel date.
Can I bring a puppy from Canada into the U.S.?
In most cases, puppies under 6 months old are not permitted to enter the US. There are no exceptions for family pets; the age requirement applies universally.
Is a health certificate required to cross the border with a pet?
A health certificate is not required under US federal law for personal pet travel from Canada. However, many airlines require one issued within 10 days of travel, and some states or landlords may also request one. It is generally advisable to obtain one regardless.
For how long is the CDC Dog Import Form valid?
The CDC Dog Import Form receipt is generally valid for up to six months from completion, provided your dog has not visited a high-risk rabies country during that period. Snowbirds who make multiple crossings within a season may be able to reuse the same form receipt rather than completing a new one each time.
Are there different rules if I am flying instead of driving?
Yes. Airline pet policies can be stricter than government requirements. Airlines may impose restrictions on breed, size, crate type, and seasonal travel, and they often require specific documentation even when it is not federally mandated. Always review your airline’s pet policy carefully before booking.
What documents do I need to bring my pet back into Canada?
Canada requires a valid rabies vaccination certificate for dogs and cats over 3 months old returning to Canada. The certificate must be in English, identify the animal, specify the vaccine used and its duration of immunity, and be signed by a licensed veterinarian. Ensure the vaccination remains valid through your entire US stay including your return date. Consult the CFIA’s pet import tool for current requirements before departure.
Can I bring my cat into the U.S. without vaccination records?
While the CDC does not require rabies documentation for cats entering from Canada, many US states do. Traveling without vaccination records can create issues if you need veterinary care or if state authorities request proof of compliance. Always carry your cat’s vaccination records.
Can Cross Country Valet help transport my pet to the U.S.?
Yes — pets are permitted to travel in the vehicle during our standard door-to-door driveaway service. If you’re having your car driven south for the winter, your pet can travel with the vehicle rather than flying separately. Contact us to discuss your specific situation and we’ll let you know if it’s a good fit.