What are the rules for bringing a pet dog or cat into the US?
The short answer
CDC says all dogs entering or returning to the US need a CDC Dog Import Form receipt. Dogs from rabies-free or low-risk countries must also appear healthy, have a microchip and be at least 6 months old. Cats must appear healthy and do not need proof of rabies vaccination.
Dogs: what CDC requires
CDC says the rules apply to all dogs, including puppies, service dogs and dogs returning to the US. The requirements depend on where the dog was vaccinated and which countries it has been in during the 6 months before entry.
- Every dog needs a CDC Dog Import Form receipt. There is no limit on the number of dogs, but each dog needs its own receipt.
- Dogs from dog rabies-free or low-risk countries need no other documents. They must appear healthy, have a microchip and be at least 6 months old.
- Dogs that have been in a high-risk country in the last 6 months need extra documents. If such a dog is not vaccinated against rabies, it will not be allowed in.
- The microchip can be any brand but must be readable with a universal scanner.
High-risk countries and ports of entry
For a dog that has been in a high-risk country, the first rabies vaccine must be given on or after 12 weeks (84 days) of age. If you take a dog to a high-risk country, CDC says its first vaccine must be at least 28 days before you leave the US.
A foreign-vaccinated dog from a high-risk country can enter only at a US airport with a CDC-registered animal care facility where it has a reservation. It cannot enter at a land border. For dogs that have not been outside Canada, Mexico and the US, the receipt is valid for multiple entries for six months.
Cats
CDC says cats must appear healthy on arrival and may be inspected at ports of entry. If a cat looks ill, a vet exam at the owner's expense may be needed. Cats do not need proof of rabies vaccination, although CDC recommends it. USDA APHIS has no animal health requirements for importing a pet cat. Check state rules too. Rules change, check the official page before you travel.
Sources: CDC: Bringing a Dog into the U.S., CDC: Frequently Asked Questions on Dog Importations, CDC: Bringing an Animal into the U.S., USDA APHIS: Bring a Pet Cat into the United States. Read 5 November 2026. Rules and fees change, so check the official page before you travel.
Frequently asked questions
Does CDC require a health certificate for my pet?
No. CDC does not require general health certificates for pets, but states or airlines may.
Does my dog need a form for each trip?
Yes, a CDC Dog Import Form receipt is required to enter or return. For dogs travelling only between Canada, Mexico and the US, one receipt covers repeat entries for six months.
Do cats need a rabies certificate to enter?
No. CDC says cats are not required to have proof of rabies vaccination for importation.