Dog in Quarantine: How Long It Lasts and Why

A dog in quarantine is a dog being held in isolation, either for a fixed 10-day rabies-observation period after biting someone, or for a longer border-control hold (10 days to 4 months) required by a country's animal health authority before an imported dog is released to its owner. Which one applies depends entirely on the reason for the quarantine, not the dog's health status.

The word "quarantine" covers two very different situations that people search for under the same phrase. This guide explains both, names the government agency behind each rule, and shows exactly how long a dog stays in quarantine in the United States, the United Kingdom, Australia, and Hawaii as of 2026.

The Two Meanings of "Dog in Quarantine"

Before looking up a duration, confirm which situation applies:

• Bite quarantine: A dog that has bitten a person is confined and observed for signs of rabies, typically for 10 days, regardless of vaccination history. This is a public-health measure run by local or state animal control and health departments.
• Border/import quarantine: A dog entering a country or state is held at an approved facility because it did not fully meet that jurisdiction's rabies-prevention paperwork (vaccination timing, microchip, titer test, or import permit). This is run by national or state biosecurity and agriculture authorities.

Why Dogs Are Quarantined: Rabies Control

Both types of quarantine exist for the same underlying reason: rabies is a fatal viral disease, and observation windows let health and agriculture authorities confirm an animal is not incubating it before it re-enters the general population. The Centers for Disease Control and Prevention (CDC) and the World Organisation for Animal Health (WOAH) both treat controlled observation periods as a standard tool for managing rabies risk in dogs, alongside vaccination and microchip identification.

Bite Quarantine: The 10-Day Rule

In the United States, a dog that bites a person is generally confined for a 10-day rabies observation period, a standard used by state and local health departments nationwide. The logic, as summarized by public health guidance, is that a dog carrying rabies and capable of transmitting it through a bite will show symptoms and die within that window — so a dog that remains healthy for the full 10 days could not have been infectious at the time of the bite.

1. Day 0: The bite is reported; the dog is confined at the owner's home, a vet clinic, or an animal control facility, typically within 24 hours.
2. Day 1: A licensed veterinarian examines the dog.
3. Mid-period: A second veterinary check occurs during the observation window.
4. Day 10: A final veterinary exam confirms the dog is healthy, and it is released from quarantine.

Rabies vaccination is not administered during this window, because a fresh vaccine reaction could be mistaken for early rabies symptoms. The dog's owner is typically responsible for quarantine costs, and specific confinement rules (home versus facility) vary by county and state.

Border and Import Quarantine, by Country

Import quarantine is a separate system tied to a dog crossing an international or state border, not to any bite incident. Requirements differ sharply by destination, and each one is set by a named national or state authority — not by Animal Passport or any private company.

United States: CDC Import Rules

As of August 2024, the CDC requires all dogs entering the United States to appear healthy, be at least 6 months old, carry a detectable microchip implanted before their rabies vaccination, and be accompanied by a CDC Dog Import Form receipt. Dogs that have been in a CDC-designated high-risk country for dog rabies within the prior 6 months face additional rules. A foreign-vaccinated dog from a high-risk country without an adequate rabies serologic titer test result must be booked into a CDC-registered animal care facility, where — according to CDC guidance — it will "remain under quarantine at the facility for 28 days after revaccination or until confirmation of adequate rabies serologic titer results are obtained, whichever occurs first." Dogs that fail the CDC's Pre-Screening Module face the same 28-day outcome. Note also that USDA-endorsed export health certificates issued after July 31, 2025 are no longer accepted for re-entry documentation, per CDC.

Hawaii: The Strictest US State Program

Hawaii has never had an indigenous rabies case and runs its own quarantine system independent of the CDC's federal rules, because it is an island state trying to stay rabies-free. Dogs that fully meet the state's 5-Day-Or-Less program — which requires two lifetime rabies vaccinations more than 30 days apart, a valid current vaccination, and a wait of at least 90 days after the most recent vaccination before arrival — can clear quarantine quickly. Dogs that don't meet every requirement face up to 120 days in state quarantine, according to the Hawaii Department of Agriculture.

United Kingdom: Pet Travel Scheme (PETS) vs. Quarantine

The UK's Pet Travel Scheme (PETS) allows dogs to enter without quarantine if they have an ISO-compliant microchip, a rabies vaccination given at least 21 days before travel, a valid pet passport or animal health certificate, and — for most non-EU arrivals — a tapeworm treatment 1–5 days before entry. Quarantine is the fallback for dogs that don't meet these conditions: GOV.UK states a pet "can only be released from quarantine when" it meets pet travel rules, has been held for 4 months, or is sent back to its country of origin. Quarantine happens at a DEFRA-approved facility reached through a limited list of approved UK ports and airports, and the owner pays all costs.

Australia: Post-Entry Quarantine at Mickleham

Australia requires most imported cats and dogs to complete mandatory post-entry quarantine (PEQ) at the government facility in Mickleham, Victoria, run by the Department of Agriculture, Fisheries and Forestry (DAFF). Dogs from Group 3 countries that pass an identity check (an official government veterinarian confirms the microchip before blood is drawn for the required rabies neutralising antibody titre test, or RNATT) qualify for the shorter 10-day stay; those that can't complete this identity check, or that arrive from higher-risk source countries, face 30 days, and non-compliant animals can be held up to 180 days. Booking is done in advance through DAFF's Post Entry Biosecurity System, and fees are charged on a cost-recovery basis.

What Shortens or Avoids Quarantine

Across every jurisdiction above, the same three paperwork failures cause most avoidable quarantine stays:

• Microchip sequencing: The microchip must be implanted before the rabies vaccination is given, in the US, UK, and Australian systems alike. A vaccine given first is often not accepted.
• Titer test timing: A rabies antibody titer test (RNATT in Australia, serologic titer in the US) usually has to be drawn a set number of days after vaccination and processed at an approved laboratory well before travel — leaving no time for a repeat test if it fails.
• Waiting periods: Hawaii's 90-day post-vaccination wait and the UK's 21-day pre-travel wait exist specifically so authorities have time to confirm the vaccine has taken effect before the animal travels.

None of these steps can be skipped with a private ID product; they are set by the destination government, and travelers should always confirm current requirements directly with that country's official agency before booking travel.

Where Animal Passport Fits — and Where It Doesn't

Animal Passport is a digital identity record, not a government travel document, and it does not replace CDC, DEFRA, DAFF, or Hawaii Department of Agriculture paperwork for a dog crossing a border. The product uses a phone camera to capture an animal's muzzle print — a nose pattern that, like a human fingerprint, is unique to the individual — and binds it to a record of the owner, breed, estimated age, and vaccination history. Age is estimated from a dental photograph with a confidence score, and body condition is scored from 1–5 based on a side-profile photo.

This kind of biometric identity record has proven useful in a different scenario than international pet travel: disaster recovery. In August 2025, Animal Passport's muzzle-biometric system was used during livestock flood rescue efforts in Pakistan, helping farmers reclaim animals after paper ear tags had washed away in floodwater. That is a fundamentally different use case from a country's rabies-prevention import quarantine system — one is about restoring proof of ownership after physical ID is lost, the other is a legal entry requirement enforced by a national government. Anyone quarantining or importing a dog internationally should follow the official government scheme for that country, not a private identity product, for legal compliance. For background on how muzzle-based digital identity works more broadly, see Animal Passport, and for a country-by-country breakdown of import quarantine rules, see the related guide on the Animal Passport blog.

As of September 2026

The CDC's current dog-import framework, including the 28-day facility quarantine for non-compliant foreign-vaccinated dogs from high-risk countries, has been in effect since August 1, 2024, with a further change on July 31, 2025 ending acceptance of older USDA-endorsed export certificates for re-entry. Rules for the UK, Hawaii, and Australia described above reflect each agency's currently published guidance as of this writing; always verify against the official source before travel, since rabies-risk country lists and documentation requirements are revised periodically.

Frequently Asked Questions

How long is a dog kept in quarantine?

It depends on the reason: 10 days for a bite-related rabies observation in the US, versus 10 days to 4 months or longer for border-control import quarantine, depending on the destination country and whether the dog met that country's vaccination and paperwork rules.

Why is a dog quarantined for 10 days after a bite?

Ten days is the standard rabies-observation window used by US health departments because a dog that was infectious with rabies at the time of a bite will develop symptoms and die within that period; a dog still healthy on day 10 could not have been shedding the virus when it bit.

Does every country require quarantine for pet dogs?

No. Quarantine is typically conditional, not automatic. Countries like the UK and Australia allow compliant, properly vaccinated and microchipped dogs to skip quarantine entirely under schemes such as the UK's Pet Travel Scheme (PETS); quarantine applies mainly to dogs that don't meet those conditions.

What is the UK Pet Travel Scheme (PETS) and does it avoid quarantine?

PETS is the official DEFRA framework letting dogs enter the UK without quarantine if they have an ISO-compliant microchip, a rabies vaccination at least 21 days old, and correct travel documentation. Dogs that don't meet PETS conditions can be quarantined at a DEFRA-approved facility for up to 4 months.

How long is Hawaii's dog quarantine?

Dogs that fully meet Hawaii's 5-Day-Or-Less program requirements clear quarantine quickly; dogs that don't meet every condition face up to 120 days in state quarantine, per the Hawaii Department of Agriculture.

Can a rabies vaccination shorten import quarantine?

Yes, in most systems. A correctly timed rabies vaccination, given after microchipping and followed by a passing antibody titer test, is usually what allows a dog to qualify for a shorter quarantine window or to skip quarantine entirely, as in the US, UK, and Australian systems described above.

Is Animal Passport a substitute for a pet travel document like PETS or a USDA/CDC import form?

No. Animal Passport is a separate, non-government digital identity record based on muzzle biometrics. It does not replace or satisfy official government travel documentation such as PETS certificates, USDA export health certificates, or CDC import forms.

What happens if a dog fails to meet CDC import requirements?

A foreign-vaccinated dog from a high-risk country that lacks a valid rabies serologic titer must be booked into a CDC-registered animal care facility and remains quarantined there for up to 28 days after revaccination, or until an adequate titer result is confirmed, whichever happens first.

Sources

This article draws on primary guidance from the CDC, GOV.UK/DEFRA, the Hawaii Department of Agriculture, and the Australian Department of Agriculture, Fisheries and Forestry — see the source list below for direct links.