Since August 1, 2024 at 12:01 a.m. ET, CDC dog import rules apply to every dog entering the United States, including dogs returning from abroad. The rules cover all dogs regardless of the owner’s citizenship or residency, so a returning US resident and a foreign visitor face the same baseline conditions. A dog must be in good health, at least six months old, and microchipped. It must also have the required vaccination paperwork, and its owner must hold a CDC Dog Import Form receipt.
What the CDC requires for dogs entering the US
The rules took effect on August 1, 2024 at 12:01 a.m. Eastern Time (ET). They apply to all dogs, and the fact sheet names three groups explicitly: puppies, service animals, and dogs returning from abroad. Because coverage does not depend on the owner’s citizenship or residency, a dog that has lived in the US and is coming back after a trip abroad is subject to the same conditions as a dog arriving for the first time.
The four baseline entry conditions
The fact sheet sets out four baseline conditions. The documentation condition has two parts: vaccination paperwork and the CDC Dog Import Form receipt.
| Condition | What the dog or owner must have |
|---|---|
| Health | The dog must be in good health. |
| Age | The dog must be at least six months old. |
| Identification | The dog must be microchipped. |
| Documentation | The required vaccination paperwork, plus a CDC Dog Import Form receipt held by the owner. |
Meeting these conditions is necessary but does not complete the picture. The fact sheet states that dogs must also meet USDA requirements and the requirements of the destination state. Dogs imported for resale face additional USDA requirements. CDC provides a Dog Importation Navigator to determine which rules apply to a given dog, and CDC-INFO can be reached at (800) 232-4636 (Centers for Disease Control and Prevention, 2024-08-01).
Does my dog need a CDC Dog Import Form?
Yes. The CDC dog import rules took effect on August 1, 2024 at 12:01 a.m. ET, and they apply to every dog entering the United States, regardless of the owner’s citizenship or residency. Puppies, service animals and dogs returning from abroad are all covered. A dog that has lived overseas and comes back to the U.S. is subject to the same form requirement as any other dog. The CDC Dog Import Form receipt is a condition of entry, so the owner must have it when the dog arrives.
Who must complete the form
The owner is responsible for completing the online form and holding the resulting receipt. The rule attaches to the dog’s entry, not to the traveller’s nationality. The following cases fall under it:
- Puppies, which are covered from the start of the rules
- Service animals, which are not exempt
- Dogs returning from abroad, which must meet the same entry conditions as dogs arriving for the first time
- Owners of any citizenship or residency, including U.S. citizens travelling back with a dog
What the receipt represents
The receipt is one of several entry conditions. It must be held alongside the other requirements: the dog must be in good health, at least six months old, microchipped, and carry the required vaccination paperwork. The receipt is not a substitute for those documents. Keep a copy with the dog’s travel papers so it can be presented on arrival.
Using the Dog Importation Navigator
The CDC provides a Dog Importation Navigator to determine which rules apply to a specific dog. Run it before departure, because it determines which rules apply to your dog. The CDC notes that dogs must also meet USDA and destination (state) requirements, and that dogs imported for resale face additional USDA requirements. For questions the Navigator does not answer, CDC-INFO can be reached at (800) 232-4636.
How do high-risk countries change the rules?
A stay in a country that CDC classifies as high-risk for dog rabies changes the entry test for your dog. The question is not only whether your dog is vaccinated now, but where it has been in the six-month look-back window before the arrival date. CDC’s rule applies to all dogs entering the U.S., including dogs returning from abroad, whatever the owner’s citizenship or residency.
The rule has two conditions that must both be true before a dog is refused:
- The dog has been in a high-risk country for dog rabies in the past 6 months.
- The dog is not vaccinated against rabies.
| Dog’s recent history | Vaccinated against rabies | Result under this rule |
|---|---|---|
| In a high-risk country in the past 6 months | No | Not allowed to enter the U.S. |
| In a high-risk country in the past 6 months | Yes | This rule does not bar entry; the other entry requirements still apply |
| Not in a high-risk country in the past 6 months | Either | This provision does not apply; the other entry requirements still apply |
Because the window is counted back from arrival, a trip that ends more than six months before you fly home does not trigger this condition on its own. CDC’s rule refers to a dog that has been in a high-risk country ‘in the past 6 months’. The published sources do not explain how that period is counted, so confirm it with the Dog Importation Navigator or CDC-INFO at (800) 232-4636 before you travel.
The country list is not fixed. Check CDC’s current list of high-risk countries before you book, and again close to departure, because the list can change. The CDC’s public information line, CDC-INFO, is at (800) 232-4636.
Note that CDC recommends that all dogs be vaccinated against rabies, so vaccination is the recommended baseline for every dog, not only for dogs that have travelled in a high-risk country.
Returning with a US-vaccinated dog
A dog vaccinated in the United States and later taken abroad is subject to the same CDC framework when it comes back. The CDC dog import rules took effect August 1, 2024 at 12:01 a.m. ET and cover all dogs, including dogs returning from abroad, whatever the owner’s citizenship or residency. The owner’s task is therefore to prove the dog’s vaccination status on arrival, using the documents the rules require.
The central document is the rabies vaccination record. The CDC recommends that all dogs be vaccinated against rabies, and a dog entering the U.S. must have the required vaccination paperwork. Before departure:
- Ask the veterinary clinic that gave the rabies vaccine for a copy of the vaccination record, and check with CDC-INFO what the required paperwork must contain.
- Confirm with a veterinarian that the dog is in good health for travel, since the dog must be in good health to enter.
- Complete the CDC Dog Import Form and keep the CDC Dog Import Form receipt with the vaccination paperwork.
- Keep the paperwork accessible at the point of entry, and confirm the accepted format with CDC-INFO.
Dogs vaccinated abroad versus in the US: the source material does not describe a separate document set for dogs vaccinated abroad. The general requirement applies in both cases: the owner must hold the required vaccination paperwork. Owners with a specific record should check their case with the Dog Importation Navigator or CDC-INFO rather than assume the two situations are treated identically.
| Resource | What it covers |
|---|---|
| Dog Importation Navigator (CDC) | Determines which rules apply to a given dog |
| CDC-INFO, (800) 232-4636 | Answers questions about the rules |
| USDA requirements | Additional rules, including for dogs imported for resale |
| Destination (state) requirements | Rules that apply where the dog arrives |
Microchip and age requirements
A dog entering the United States must be at least six months old and microchipped. These two conditions apply under the CDC dog import rules, which took effect August 1, 2024, at 12:01 a.m. ET. The rules cover all dogs, including puppies, service animals, and dogs returning from abroad, whatever the owner’s citizenship or residency. The age and microchip conditions are checked alongside the other entry requirements, so a dog that does not meet either one can be refused entry.
| Requirement | Rule | Source |
|---|---|---|
| Minimum age | At least six months old | U.S. Army (army.mil), 2024 |
| Identification | Must be microchipped | U.S. Army (army.mil), 2024 |
| Scope | All dogs, including puppies and dogs returning from abroad | CDC, 2024-08-01 |
| Failure to comply | Dog can be sent back to its last country of departure at the owner’s expense | U.S. Army (army.mil), 2024 |
The six-month threshold
The six-month minimum is a flat age rule, not a health assessment. A puppy that is younger than six months cannot enter the U.S. under this rule, even if it is healthy and travelling with its owner. Owners travelling with a young puppy should confirm the animal’s date of birth before booking, since a dog that falls short of six months on the travel date does not qualify.
The official sources in the fact sheet state the six-month rule but do not give the reasoning behind it, so this section does not offer one.
Microchip requirement
The dog must carry a microchip before it enters the U.S. The fact sheet does not specify the microchip standard, the number of days before travel the chip must be implanted, or how the chip must be read at the border, so check the current CDC Dog Importation Navigator or contact CDC-INFO at (800) 232-4636 for those details.
Age and microchip are two separate conditions. Meeting one does not satisfy the other, and a dog must meet both to be admitted.
What happens if my dog is denied entry?
A dog that does not meet the CDC dog import rules can be refused entry to the United States. The rules took effect August 1, 2024 at 12:01 a.m. ET and cover all dogs, including dogs returning from abroad, whatever the owner’s citizenship or residency. Refusal does not end the process at the border. A dog that does not meet the rules can be sent back to its last country of departure at the owner’s expense.
Return to the last country of departure
A dog that doesn’t meet the rules can be sent back to its last country of departure. If the dog is sent back, the return is made at the owner’s expense. Owners travelling with a dog should therefore treat the return trip as a possible outcome and plan for it before departure, not after arrival.
Reasons a dog can be refused boarding
A dog must be in good health, have the required vaccination paperwork, and be covered by a CDC Dog Import Form receipt. Failing any one of these requirements is enough to make the dog ineligible for entry.
| Refusal trigger | What the owner must have ready |
|---|---|
| Dog not in good health | Evidence the dog is fit to travel, confirmed with a veterinarian before departure |
| Required vaccination paperwork missing | Complete vaccination records for the dog |
| No CDC Dog Import Form receipt | The receipt for the CDC Dog Import Form |
Sources: U.S. Army (army.mil), 2024; Centers for Disease Control and Prevention, 2024-08-01.
USDA and state rules to check before you fly
Federal CDC rules are one layer of the entry check, not the whole of it. The CDC dog import rules took effect August 1, 2024 at 12:01 a.m. ET and apply to all dogs, including dogs returning from abroad. Dogs must also meet USDA requirements and the requirements of the destination state, so a dog can satisfy the federal rules and still lack a required document at the state level.
Destination state requirements
State rules sit on top of the federal baseline. The CDC guidance does not list individual state requirements, so you need to confirm them for the state where the dog will live, not for the airport or the departure city.
- Identify the exact destination state and check its current animal health rules for dogs arriving from abroad.
- Record the name of the state office or page you used and the date you checked, since rules change.
- Carry copies of any state-required paperwork with the dog’s other travel documents.
Dogs imported for resale
Dogs imported for resale have additional USDA requirements beyond those that apply to a dog travelling with its owner. If the dog is being sold, transferred, or placed with a new owner after arrival, treat it as a separate case. Do not assume that personal-travel paperwork covers a resale import.
Pre-travel verification
| Step | Action | Basis |
|---|---|---|
| 1 | Establish whether the dog is a personal return or an import for resale | Resale triggers extra USDA requirements |
| 2 | Check USDA requirements for your dog’s situation | USDA rules apply in addition to CDC rules |
| 3 | Check the requirements of the exact destination state | State rules apply on top of federal rules |
| 4 | Call CDC-INFO at (800) 232-4636 to confirm which rules apply | Number listed in CDC guidance |
| 5 | Keep written confirmations and copies of documents with the dog | Needed if officials ask for proof |
Frequently asked questions
Do I still need the CDC Dog Import Form if my dog is only coming home after a trip abroad?
Yes. The form requirement applies to dogs returning from abroad as well as to dogs arriving for the first time, and the owner must hold a CDC Dog Import Form receipt when the dog enters. Your dog must also meet USDA requirements and the rules of the destination state.
What happens if my dog does not meet the entry rules at the border?
The dog can be sent back to its last country of departure, and the owner pays for that return trip. The CDC and U.S. Army sources say the dog can be returned this way, not that it always is, so the outcome depends on the specific case.
My dog has been in a high-risk country for dog rabies. What should I check first?
A dog that has been in a high-risk country for dog rabies in the past six months and is not vaccinated against rabies will not be allowed to enter the U.S. The published CDC sources do not explain how the six-month period is counted or what the vaccination record must contain, so confirm both with CDC-INFO at (800) 232-4636 or the Dog Importation Navigator before you travel.
