Domestic Travel (Inside the U.S.)
- No documents required for Service Dogs, PSDs, or ESAs.
- If you are flying, follow the airline’s requirements only.
International Entry Into Montana
Required Documentation & Gear (must bring)
- ISO-Compliant Microchip (must match all documents)
- Rabies Vaccination Certificate
- Puppy must be 12+ weeks old at the time of vaccination
- High-risk countries: Rabies Titer required
- Low-risk countries (Canada, Western Europe, etc.): Titer not required
- Veterinary Health Certificate (vet letter confirming no known diseases)
Preferred Documentation (greatly facilitates acceptance and pre-clearance)
- Physical ID Card (animal + handler)
- Recognition Gear (Service Animal vest, bandana, or harness)
- Prescription Letter (ESA, PSA, or Service Animal letter from a licensed professional)
Important Notes
- A physical ID Card, Registration Certificate, and visible Recognition Gear speed up the processing.
- No airport restrictions: You do not need to enter through a special CDC-approved airport. You can enter at any U.S. airport as long as the airline accepts the animal and you have the required documents in your possession.
- Assistance Animals follow the same import rules as pets.
Deworming / Tapeworm Treatment Rules
Montana does not require tapeworm treatment for dog entry.
Routine deworming is recommended due to wildlife-dense regions and outdoor activities, but it is not mandatory.
Restricted Breeds at Entry
Montana has no statewide breed restrictions.
Some municipalities may have dangerous-dog ordinances, but breed-specific bans are rare. Always check local rules.
Public Transport & Transit Rules
Service Dogs are allowed on all local transit systems, including Mountain Line (Missoula) and MET Transit (Billings).
ESAs and pets may be restricted unless in carriers or depending on transit-agency policies.