Traveling With Pets to Maryland: The Rabies Certificate and CVI Rules You Need to Know

If you’re traveling with pets to Maryland for a beach weekend or a permanent move, the state won’t stop you at a border checkpoint — but it does expect a paper trail once you’re here. Maryland runs its pet entry rules through a rabies-control law that treats dogs, cats, and ferrets almost identically, backed by a separate importation regulation that gives the state’s Public Health Veterinarian the authority to order a non-compliant animal sent back to its point of origin at your expense.

That’s not a hypothetical. It’s written directly into state code. This guide walks through exactly what documentation you need, how the rules shift depending on whether you’re driving through for a weekend or settling in for good, and what to line up before you load the car or book a flight.

What It Covers (and What It Doesn’t)

This guide focuses on the paperwork Maryland’s state government and local health departments require when a dog, cat, or ferret crosses into the state — not every pet-related law you might run into once you’re settled.

Specifically, it covers Maryland’s statewide rabies vaccination and importation rules, whether you need a Certificate of Veterinary Inspection, the separate layer of airline health certificate requirements, what happens when paperwork is missing, and local county licensing after you arrive.

It does not cover exotic pet ownership law. If you’re traveling with something other than a dog, cat, or ferret — a pet chameleon, for example — the legal framework is completely different. Check what’s involved in keeping chameleons as pets and which exotic pets are legal in Maryland before you pack. This piece also skips landlord and HOA pet policies, breed-specific restrictions some counties enforce, and the federal paperwork tied to international pet re-entry.

Who Sets Entry Rules When You Bring a Dog or Cat into Maryland

Maryland’s rabies and pet-importation rules sit in Title 18, Subtitle 3, of the Health-General Article of the Maryland Code and COMAR 10.06.02, and they’re enforced by the state’s Public Health Veterinarian and local health officers rather than a border agency. This is the same regulatory framework that governs vaccination, licensing, and what happens when an animal bites someone, so pet travel paperwork isn’t a separate bureaucracy — it’s one piece of a larger public-health system.

The Certificate of Veterinary Inspection requirements that many travelers also need to satisfy come from Maryland’s broader animal import regulations, which spell out what that certificate must say for dogs, cats, ferrets, and dozens of other species crossing into the state. If you’re moving rather than just visiting, it’s worth reading a fuller breakdown of Maryland’s pet import laws, since the same regulations apply whether you’re arriving with a car full of boxes or a carry-on carrier.

Dogs vs. Cats: Do Entry Rules Differ?

Unlike a number of other states, Maryland doesn’t split its rules by species. The owner or custodian of a dog, cat, or ferret 4 months old or older to be imported into the State for any purpose shall forward a certificate, issued by a licensed veterinarian, to the Public Health Veterinarian within days of arrival — the same obligation, the same deadline, the same documentation, regardless of whether you’re hauling a Labrador or a house cat.

That consistency isn’t universal nationwide. California and Texas do not require you to provide a CVI when importing cats or dogs, while in Illinois and Michigan, dogs require a CVI but cats do not. If you’re used to a state where cats get a paperwork pass, don’t assume Maryland works the same way — it treats dogs and cats as equals under its import law. The table below shows how a few states compare on this point.

State	CVI Required for Dogs	CVI Required for Cats
Maryland	Yes	Yes
California / Texas	No	No
Illinois / Michigan	Yes	No

If your trip involves both a dog and a cat, the paperwork burden is identical for each — you’ll just be filling out two sets instead of one. Traveling with a multi-pet household comes with its own logistics beyond documentation, too; if you’re introducing a new dog to a resident cat around the time of your move, it helps to look at which dog breeds tend to get along with cats before the stress of a move adds friction to that relationship.

Rabies Vaccination Proof You Need

Every dog, cat, and ferret entering Maryland at four months or older needs a signed rabies certificate, and the state is specific about what that document has to contain. A vaccine manufacturer shall issue the official National Association of State Public Health Veterinarians (NASPHV) Form 51, Rabies Vaccination Certificate, or an equivalent form, and the certificate shall be completed and signed by a Maryland-licensed veterinarian or, in the case of public antirabies clinics, issued under the authority of the Public Health Veterinarian. For animals being imported specifically, the certificate has extra requirements: it must describe the dog, cat, or ferret, document that it was vaccinated against rabies, list the manufacturer or brand of vaccine used, list the date or dates the vaccine was given, document that the animal is adequately vaccinated, and confirm that the shot was given more than 30 days before your arrival date in the state.

Pro Tip: Your veterinarian doesn’t just hand you a certificate — a rabies tag comes with it, and Maryland expects that tag to stay on your pet’s collar. It’s the fastest visible proof of compliance if animal control or a county official ever asks.

Get the full detail on how the state’s rabies law connects vaccination timing, certificate content, and licensing in this breakdown of Maryland’s pet vaccination laws. Note that this isn’t a one-time requirement tied only to your move — it’s ongoing for as long as you own the animal in the state.

Does Maryland Require a CVI / Health Certificate?

Yes, in most cases. According to veterinary guidance on interstate travel, Maryland requires a current Certificate of Veterinary Inspection or Health Certificate within 30 days of import. That CVI has to include a specific rabies statement confirming the animal did not originate within an area under quarantine for rabies, and by reasonable investigation, has not been exposed to rabies within six months prior to entry, plus proof of at least one approved rabies vaccination — except for puppies and kittens under four months old, who are exempt from the vaccination portion.

There are a couple of narrow exceptions. No Certificate of Veterinary Inspection is required for dogs entering the state temporarily for exhibition purposes, provided the health requirements are otherwise met, and research facilities and licensed dealers are exempt from the certificate requirement when importing dogs, cats, and ferrets. There’s also a short-stay carve-out: the owner or custodian of a dog, cat, or ferret brought into the State for a period of less than 30 days is exempt from the requirement to forward a certificate to the Public Health Veterinarian, provided a current one accompanies the animal. That’s the exception that matters most if you’re just visiting for a long weekend rather than relocating.

Other Papers, Tests, or Permits (HI: quarantine / FAVN / AQS-279)

If you’ve researched pet travel to Hawaii, you already know what a genuinely strict import system looks like — a FAVN antibody titer test, an AQS-279 application, and in some cases a quarantine stay. Maryland asks for none of that. Hawaii has substantially stricter import and quarantine regulations than most states, and Maryland’s requirements — a rabies certificate plus, in most cases, a CVI — are modest by comparison.

Key Insight: There’s no rabies antibody blood test, no mandatory quarantine, and no state-issued entry permit for dogs, cats, or ferrets moving into Maryland. The paperwork burden is real, but it’s a fraction of what states like Hawaii require.

Maryland’s import regulations do reach beyond dogs and cats, though. Pet birds require a CVI, rabbits require a CVI, and horses require a CVI, with horses over nine months also needing a negative EIA test within the prior year. If your move includes more than a dog or cat, check the specifics for rabbit breeds commonly kept as pets or pet bird species before you assume the dog-and-cat rules cover your whole household.

Flying vs. Driving: Airline Health Certificates Are a Separate Layer

Driving into Maryland only triggers the state paperwork described above. Flying adds a second, entirely separate set of requirements set by the airline and, for international trips, by federal agencies — and satisfying one doesn’t automatically satisfy the other.

Most airlines require their own health certificate dated close to your travel date rather than accepting whatever paperwork the state asks for. Most states require this certificate dated within 10 days of travel for dogs and cats crossing state lines, and airlines generally mirror that tight window rather than the 30-day cushion Maryland’s own import rule allows. If you’re flying internationally with a dog, there’s an added federal layer: starting August 1, 2024, the CDC implemented new requirements for dogs re-entering the US, and for low-risk countries you only need the CDC Dog Import Form.

Important Note: Never assume a state-compliant rabies certificate is enough for a flight. Call your airline directly and confirm its health certificate window and format before you book, since requirements change by carrier and by route.

If you’re driving instead, the risk shifts from paperwork to logistics — long stretches in a hot car parked at a rest stop can be far more dangerous than a missing form. Review the specific dangers of leaving pets in hot cars in Maryland before you plan a multi-stop road trip.

Pre-Trip Checklist

Work backward from your travel date so nothing gets rushed at the last minute:

1. Book a vet visit at least 30 days before arrival — the rabies shot needs that window to count for import purposes.
2. Get a signed rabies certificate on the NASPHV Form 51 or an equivalent, listing vaccine brand and date.
3. Ask your vet for a CVI if you’re relocating, flying, or bringing a species beyond dogs and cats.
4. If you’re staying 30 days or longer, plan to forward your certificate to the Public Health Veterinarian within 10 days of arrival.
5. Confirm your airline’s specific health certificate window separately from state requirements — don’t assume they match.
6. Look up your destination county’s licensing rules before you arrive, not after.
7. Pack food, water, and a leash for the trip, and check how long dogs can safely go without food if a long drive might disrupt normal feeding times.
8. Never leave a pet unattended in a parked vehicle, especially during Maryland’s warmer travel months.
9. Save the contact information for a vet near your destination before you need one in an emergency.

What Happens If Your Pet Doesn’t Meet Entry Rules

Maryland’s enforcement options aren’t symbolic. If a dog, cat, or ferret is brought into Maryland in violation of the vaccination requirements, the Public Health Veterinarian or local health officer can order the owner to return the animal to its point of origin at the owner’s expense. That’s a real financial and logistical consequence, not just a warning letter.

Important Note: If no one assumes financial responsibility for the animal within 48 hours, the local animal control authority can treat it as abandoned and either euthanize it or place it for adoption. This is why keeping your rabies certificate accessible during travel matters as much as getting it in the first place.

Local ordinances can add their own presumptions. In Baltimore City, for example, any unlicensed dog, cat, or feral cat older than four months is presumed to be unvaccinated, and that presumption can be rebutted only by a current rabies vaccination certificate signed by a veterinarian or issued by an approved government agency. In practice, that means the burden of proof sits with you — showing up without paperwork puts your pet in a legally worse position than showing up with an expired one.

After You Arrive: Local Licensing and Ongoing Rabies Rules

Getting into Maryland is only half the compliance picture. Most counties require dogs — and in some jurisdictions, cats — to carry a local license in addition to the state rabies certificate, and that license is tied directly to your pet’s vaccination schedule.

Montgomery County offers a clear example of how the timing works: your pet’s rabies vaccination must be valid for at least two months (60 days) in order to purchase a pet license, and county licenses are based on vaccine dates. Frederick County takes a similar approach, requiring all dogs, cats, and ferrets four months or older to have a current rabies vaccination, and requiring all dogs and cats to be licensed pursuant to county code. The license itself typically expires on the same schedule as the underlying rabies certificate, which means renewing one means renewing both.

County	License Required For	Minimum Rabies Validity to License
Montgomery County	Dogs and cats	60 days remaining on vaccination
Baltimore County	Dogs (service dogs licensed free)	Current certificate required
Frederick County	Dogs and cats	Current vaccination required

Because Montgomery County’s licensing process shows, requirements and renewal timelines genuinely vary block by block once you cross a county line, so treat “Maryland requires licensing” as a starting point rather than a complete answer — always confirm the specific rule where you’re actually going to live.

Where to Verify Current Rules

Regulations get updated, and county-level rules can shift independently of state law, so don’t rely on any single guide — including this one — as your final word before travel.

• The Library of Maryland Regulations for the full text of COMAR 10.06.02 governing rabies and animal importation
• The Maryland Department of Agriculture’s Animal Health division for CVI content requirements across species
• Your destination county’s animal control or health department for local licensing rules and fees
• Your airline’s pet travel policy page for health certificate timing that may not match state requirements
• Your veterinarian, who can confirm your specific paperwork is complete before you travel rather than after

Requirements can also change with little public notice, so a quick call to the Public Health Veterinarian’s office or your destination county before you finalize travel dates is worth the ten minutes it takes.