Since 1 January 2021, a dog travelling from Great Britain to France crosses an external border of the European Union. The blue European pet passport issued by a British vet before Brexit no longer authorises entry into France, and the French border officer is entitled to check the animal papers just as carefully as the owner’s passport. Every year, British families relocating to the Dordogne, Brittany or Paris learn this the hard way: a missing stamp, a rabies jab given a day too early, or a microchip number that does not match the certificate can mean the dog is refused, held, or sent back. This article explains, for a British reader, the complete legal journey of a dog moving from Britain to France after Brexit: the animal health certificate (the veterinary document that replaced the passport for British pets), the checks at the French border and the remedies if entry is refused, then the French duties that apply once the dog lives in France — registration in the national identification file known as I-CAD (Identification des Carnivores Domestiques, the French register of domestic carnivores, meaning dogs, cats and ferrets), vaccination discipline, and the strict regime for so-called dangerous dogs, which catches many British owners of Staffies, Rottweilers and similar breeds by surprise. Every legal statement below is anchored in the statute or official guidance cited next to it.

Three ideas run through the whole subject. First, the journey has two halves governed by two different legal systems: British pages tell you how to leave, French statutes tell you how to enter and stay, and you need both. Second, France treats the dog as an identified, traceable animal from the first day: the microchip is the key that links the animal, the certificate, the vaccination and the register, and any break in that chain creates liability. Third, the dangerous-dog regime is criminal law, not paperwork: keeping a listed dog without the mayor’s permit (permis de détention, the detention permit issued by the town hall) or walking it unmuzzled can lead to fines, seizure of the animal and, in serious cases, imprisonment. Understanding these three ideas before the ferry sails saves distress at the border and prosecution afterwards.

I. Getting Your Dog Across the Channel Lawfully After Brexit

A. Why Your Old UK Pet Passport No Longer Works: Microchip, Rabies Jab and the Animal Health Certificate

Before Brexit, a British dog travelled to France on an EU pet passport issued by the family vet, and border checks were light. That world ended on 1 January 2021. The British guidance states the position plainly: if you live in England, Scotland or Wales, you cannot use a pet passport to enter the EU – even if it was issued in the EU. A passport issued in Great Britain is no longer a valid travel document for entering the European Union, and if you use a pet passport instead of an animal health certificate, your pet may be refused entry. There is one exception worth knowing: pet passports issued in Northern Ireland remain usable for EU entry under separate arrangements. For every other British dog, the travel document is now the animal health certificate, and it must be obtained afresh for each trip. For every other British dog, the travel document is now the animal health certificate, and it must be obtained afresh for each trip.

The certificate is governed by Regulation (EU) No 576/2013 on the non-commercial movement of pet animals, the European text that still controls entry into France, and its requirements are cumulative: identification, valid rabies vaccination, veterinary certificate, and a single owner accompanying no more than five animals. The French administration summarises the entry conditions as follows: you can travel within the EU with your dog if it meets all of the following conditions — to be identified by microchip, to have a European identification passport issued by a veterinarian, and to be vaccinated against rabies — with the animal health certificate standing in for the passport for British dogs. Each of those three words carries a precise legal meaning, and each is checked.

Identification comes first, because everything else depends on it. The dog must carry a microchip (an electronic chip implanted under the skin, readable with a scanner), or a clearly legible tattoo applied before 3 July 2011. The British guidance on taking your pet abroad is explicit: you must get your pet microchipped before, or at the same time as, their rabies vaccination, and if you do not, they will need to be vaccinated again. This is not administrative pedantry. The microchip number is written into the certificate and the vaccination record; if the chip is implanted after the jab, the jab cannot be linked to the animal and is legally worthless. Have your vet scan the chip at every appointment and confirm the number matches the papers before you travel.

Rabies vaccination comes second, and the calendar is strict. The animal must be at least twelve weeks old at the first vaccination, and protection is legally acquired only after a waiting period: you must wait at least 21 full days after the first vaccination before travelling, while a booster given without any break in cover allows immediate travel. The French guidance confirms the same timetable: rabies vaccination is possible from twelve weeks and takes effect at least 21 days later. In practice, this means the first trip with a newly vaccinated puppy cannot happen before the age of about fifteen weeks, and owners should count the twenty-one days from the day after vaccination. A booster that lapses, even by a day, resets the clock to a first vaccination with the full waiting period.

The animal health certificate itself comes third and last. It must be issued by an official veterinarian — a vet specifically authorised to certify exports, not necessarily the family vet — within a short window before travel: the certificate is valid 10 days, for entry into the EU, 6 months, for onward travel within the EU after you enter the EU, and 6 months, for re-entry to Great Britain, and you will need to get a new animal health certificate for each separate trip. Have the certificate issued by the official veterinarian close enough to departure that the ten-day entry window comfortably covers your crossing. Regular cross-Channel travellers should absorb this point: unlike the old passport, the certificate is single-trip. A second home owner who shuttles between Kent and Normandy needs a fresh certificate, with a fresh vet appointment and fee, for every outward journey. When the vet issues the certificate, you will also sign a declaration that the movement is non-commercial — that you are not selling or rehoming the animal — because movements of more than five animals, or any movement for sale, fall under separate commercial rules with far heavier requirements. The French official guidance confirms the ceiling: the number of animals that can accompany you is 5, with a narrow exception for animals travelling to competitions or shows.

Two practical points complete the picture. First, the tapeworm treatment that many British owners remember from the old regime is not required for entering France: the 24-to-120-hour treatment against Echinococcus documented on the embassy pages applies to arrival on British territory, not French territory. Your vet will tell you whether any parasite treatment is required: the British guidance notes that some countries require dogs to have a tapeworm treatment, so check the rule for France and for every country of onward or return travel before departure. Second, controls can happen wherever the authorities operate along the route, so the owner must carry the complete papers — certificate, vaccination booklet and proof of identification — at all times during the journey.

B. What French Officers Check at the Border and What Happens If Your Dog Is Refused

French controls on incoming pet animals rest on a broad statutory power. Article L. 236-1 of the Rural and Maritime Fisheries Code (Code rural et de la pêche maritime, the French code governing agriculture, animals and food safety) provides that to be introduced onto metropolitan territory, live animals must meet the health conditions fixed by European regulation or, within the limits it allows, by the Minister for Agriculture. The same article adds a detail that matters for rescue dogs and some imported breeds: any dog imported or introduced onto national territory may only enter if it has at least one adult tooth, a rule aimed at very young puppies. Where introduction is liable to constitute a serious danger to human or animal health, the Minister may take preventive measures against the animals concerned. In plain terms, the officer at the French border post who finds a non-compliant animal has the statute behind a refusal, and the owner needs a remedy, not an argument.

In practice, the documentary check covers four items: the microchip (scanned and compared with the papers), the rabies vaccination history (dates, validity, and the twenty-one-day rule for first vaccinations), the animal health certificate (date of issue within ten days, signature of an official veterinarian, matching chip number), and the non-commercial declaration. Common failure points, reported consistently by vets on both sides of the Channel, are easy to list and easy to prevent: a certificate issued eleven or twelve days before travel; a booster recorded after the previous vaccination expired, which silently converts the movement into a first vaccination still inside its waiting period; a microchip number with transposed digits; a certificate signed by a vet without official-veterinarian status; and a dog presented without any adult teeth. Each of these can ground a refusal of entry for the animal, even though the owner is personally entitled to enter France as a visitor.

Refusal does not mean the officer seizes the dog on the spot as a matter of course. The proportionate outcomes, depending on the defect and the health risk, range from regularisation (the owner is directed to a vet to complete the missing treatment or document) through holding under official supervision, to return of the animal to Great Britain at the owner’s expense. What the owner should do in the first hour is practical: stay calm and polite, ask precisely which document or condition is judged defective and have the reason noted, telephone the issuing vet so a corrected or replacement certificate can be prepared, and keep every paper handed over, including any written decision. If the animal must be held or returned, ask for the decision in writing with its legal basis, the authority to which any challenge can be addressed, and the time limit — French administrative decisions must state the remedies and deadlines (voies et délais de recours, the appeal routes and time limits printed at the foot of the decision), and their absence can itself support a later challenge.

The legal remedies follow ordinary French administrative law. The first step is usually an informal appeal to the authority that decided (recours gracieux, a free written request asking the same authority to reconsider), addressed quickly to the departmental directorate for population protection (Direction départementale de la protection des populations, the local authority responsible for veterinary and consumer controls, usually shortened to DDPP) or the border veterinary service, with the corrected documents attached. In parallel, the owner can appeal to the administrative court (tribunal administratif, the court that reviews decisions of the administration) against a refusal or holding decision, and in a genuine emergency — for example an animal held in conditions that threaten its health — an urgent application to the duty judge (référé, the fast-track emergency procedure before the administrative court) can be considered with a lawyer. Deadlines are short, normally two months from notification for a full appeal and a matter of days for urgent relief, so the written decision and its date matter enormously. Keep boarding receipts, veterinary invoices, kennel fees and any replacement travel costs: if the refusal is annulled as unlawful, these documents ground the subsequent claim for compensation against the State.

Prevention remains cheaper than litigation. Book the official-veterinarian appointment early enough that a ten-day window still leaves room to correct an error — the tenth day before travel is the earliest the certificate can be signed, not a target. Ask the vet to read the chip, read it back against the certificate, and confirm the rabies entries satisfy the twenty-one-day rule on the travel date. Carry the dog’s full vaccination booklet alongside the certificate, even though only the certificate is the travel document; it helps resolve on-the-spot queries about boosters. And if you relocate permanently rather than visit, remember that the border is only the first step: French law imposes continuing duties from the day the dog lives in France, which is the subject of the second part. Readers planning the human side of the same move — visas, residence permits and refusals — will find the general entry framework explained in our guide to British long-stay visas and residence permits after Brexit.

II. Living in France with a British Dog: the Duties That Catch Owners Out

A. Registering a British-Identified Dog with I-CAD and Keeping the Vaccinations Current

Once the dog lives in France, French identification law takes over, and it is stricter than many British owners expect. Article L. 212-10 of the Rural Code provides that dogs, cats and ferrets, before any transfer whether free or paid, are identified by a method approved by the Minister for Agriculture implemented by persons authorised by him for that purpose, and adds that the same applies, outside any transfer, to dogs over four months old, to ferrets over seven months old born after 1 November 2021, and to cats over seven months old. Identification is at the transferor’s expense, and the methods and conditions are fixed by decree, as article L. 212-12 confirms. A British microchip does not exempt the animal: a chip implanted in the United Kingdom satisfies the technical requirement of identification, but the animal must still be entered in the French national file so that a French vet, pound or police officer who scans it finds an owner.

That file is the I-CAD, the national register of domestic carnivores managed by the approved body of the same name. The French administration’s own guidance for animals arriving from abroad describes the procedure: the owner creates a holder account, uploads the supporting documents for the animal (which vary with the country of origin), and sends I-CAD a cheque for 12 euros payable to I-CAD. The contact point is I-CAD, the body approved to manage the national identification file for domestic carnivores (dogs, cats and ferrets). In practice, most owners complete the transfer through their new French vet, who verifies the chip, records the British origin documents, and files the registration; ask for written confirmation that the file entry shows your French address, because pounds and town halls rely on it. Update the file every time the address changes or the animal changes hands: an unfindable owner is treated, in practice, as an absent owner, with all the consequences that follow for holding periods and liability.

Enforcement is real and shared between several authorities. Article L. 212-13 of the Rural Code gives customs officers, municipal police officers and rural wardens the power to search for and record breaches of the identification rules, within their districts. An unidentified dog over four months old can therefore attract attention during an ordinary municipal patrol, not only at the border. Beyond the fine, the practical sanction is what happens if the dog strays or bites: an animal that cannot be traced to an owner is impounded (mise en fourrière, placement in the municipal pound), and the costs accrue daily to the owner once identified, or lead to rehoming or euthanasia decisions if no owner appears within the legal holding period.

Vaccination discipline continues for life. French law does not impose a general annual vaccination duty on every dog, but rabies vaccination must be kept continuously valid for any dog in the categories that require it — dangerous dogs, dogs travelling abroad, dogs in regulated gatherings — and the twenty-one-day trap described above applies at every lapse: a single day without cover turns the next jab into a first vaccination. Keep a single booklet, have every jab entered with the chip number, the date, the product and the vet’s stamp, and diarize boosters a month ahead. If a bite occurs, the protocol is immediate and non-negotiable: the dog enters a veterinary surveillance period for rabies (mise sous surveillance sanitaire, the statutory observation period after any bite by a carnivore), the victim is directed to medical and, where relevant, anti-rabies care, and the mayor and health authorities are informed. An owner whose file and vaccinations are in order faces this stressful episode with paperwork that protects both the animal and the household; an owner without them faces it defenceless.

Civil liability should concentrate every owner’s mind. Article 1243 of the Civil Code (Code civil, the French civil code) states that the owner of an animal, or the person using it while it is in his service, is liable for the damage the animal has caused, whether the animal was in his keeping or had strayed or escaped. This is strict liability: the victim does not have to prove fault by the owner, only the damage and the animal’s role. Home insurance (assurance habitation, the household multi-risk policy compulsory for most tenants and standard for owners) normally covers everyday dog damage to third parties, but owners should check the policy wording for breed exclusions and inform the insurer of the dog’s arrival — and, as the next section shows, owners of categorised dogs must hold a specific civil-liability policy, not merely the household cover.

B. The Dangerous-Dog Rules: Categories, the Mayor’s Permit and the Muzzle-and-Lead Duty

The regime for dangerous dogs is the part of French animal law that most surprises British owners, because breeds that live ordinary family lives in the United Kingdom fall into French legal categories with criminal consequences. Article L. 211-12 of the Rural Code provides that the types of dogs liable to be dangerous, subject to the specific measures in articles L. 211-13 to L. 211-16, are divided into two categories: 1st category: attack dogs; 2nd category: guard and defence dogs, and that an order of the Minister of the Interior and the Minister for Agriculture draws up the list of the types of dogs in each category. In practice, the first category covers pit-bull-type dogs without pedigree papers (often called pit-bulls in everyday language, including American Staffordshire Terrier types, Mastiff types and Tosa types without recognised registration), while the second covers pedigree American Staffordshire Terriers, Rottweilers (with or without papers), Tosa with papers, and similar guard breeds. Crossbreeds whose morphology matches a listed type can be classified by veterinary assessment, so a rescue dog of uncertain parentage adopted in England may be categorised on arrival in France. Any owner of a Staffordshire-type, Rottweiler-type, Mastiff-type or Tosa-type dog should therefore have the classification checked by a French vet before assuming the animal is an ordinary dog.

Classification triggers three cumulative duties: who may hold the dog, the mayor’s permit, and the behavioural rules. First, some people may not hold a categorised dog at all. Article L. 211-13 states that persons under eighteen, adults under guardianship without the guardianship judge’s authorisation, persons convicted of a crime or of imprisonment for an offence entered on bulletin no. 2 of the criminal record (or the equivalent document for foreign nationals), and persons from whom ownership or custody of a dog has been withdrawn under article L. 211-11 may not hold the dogs mentioned in article L. 211-12. British owners should note the reference to the equivalent of bulletin no. 2 for foreign nationals: a British criminal conviction can disqualify, and the mayor may ask for a British criminal-record document. Second, holding a categorised dog requires the detention permit. Article L. 211-14 provides that for persons other than those listed in article L. 211-13, holding the dogs mentioned in article L. 211-12 is subject to the issue of a detention permit by the mayor of the municipality where the owner or holder resides, and that the permit must be shown at the town hall of any new place of residence when the owner moves. Issue of the permit requires proof of identification of the dog under article L. 212-10, a rabies vaccination currently valid, third-party liability insurance covering damage the dog may cause, sterilisation for first-category males and females, and the owner’s certificate of aptitude (attestation d’aptitude, the certificate obtained after a statutory training course on handling dangerous dogs) following a behavioural assessment of the animal. First-category dogs must also be sterilised, without exception. The file is assembled with the town hall of the commune of residence; allow several weeks, because the behavioural assessment, the training day and the insurance certificate rarely align in a single week.

Third, the daily rules are strict and visible to every neighbour. Article L. 211-16 provides that access by first-category dogs to public transport, to public places except the public highway, and to premises open to the public is prohibited, as is their presence in the common areas of apartment buildings, and that on the public highway and in the common areas of apartment buildings, first- and second-category dogs must be muzzled and kept on a lead by an adult, as must second-category dogs in public places, premises open to the public and public transport. A landlord or co-owner may report a dangerous dog to the mayor, who can then order the measures in article L. 211-11 — and article L. 211-11 itself empowers the mayor or, failing him, the prefect, where an animal is liable given the conditions of its keeping to present a danger, to require the owner to take preventive measures, and after a behavioural assessment to impose training and the aptitude certificate, with placement, and ultimately euthanasia after veterinary opinion, for non-compliance. Add the criminal layer: keeping a categorised dog without a permit, owning one while disqualified, or letting a dangerous dog cause injury exposes the owner to fines and imprisonment under the Penal Code provisions that back this regime, alongside the civil liability of article 1243 described above. A British owner who walks an unmuzzled Rottweiler through a French market is therefore not committing a minor faux pas but a punishable offence.

Two warnings complete this section. Renting with a categorised dog is genuinely difficult: many landlords and insurers refuse them, holiday parks and campsites often ban first-category dogs outright, and some communes apply the rules with particular zeal after any biting incident in the area. Check the lease, the building rules and the insurance position before signing, and keep the permit, the insurance certificate and the vaccination proof available on a phone as well as on paper. And never attempt to evade classification by declaring a listed dog as a crossbreed of convenience: a veterinary or judicial assessment that reclassifies the animal turns every prior omission — no permit, no insurance, no muzzle — into an aggravating history rather than an excuse.

Conclusion

Bringing a British dog to live in France after Brexit is an achievable project, but it is a legal project, not merely a logistical one. The outward journey demands a microchip implanted before the rabies jab, a first vaccination respected with its twenty-one-day wait, and a fresh animal health certificate signed by an official veterinarian within the ten days before each crossing — the old British-issued passport no longer opens the French border. At the border, the officer checks the chain linking chip, vaccination and certificate, and a refusal, while distressing, can be met with a written decision, an urgent request for reconsideration with corrected papers, and, where needed, an appeal to the administrative court within its short deadlines. Once home in France, the owner registers the animal with the I-CAD, keeps the file and the vaccinations current, carries real third-party cover, and — for the many British owners of Staffie-type, Rottweiler-type and similar dogs — faces the categorised-dog regime squarely: mayor’s permit, aptitude certificate, insurance, sterilisation where required, muzzle and lead in every public place. Done in this order, each step protects the next: a clean border file becomes a clean town-hall file, and a clean town-hall file is the best defence if the dog ever strays, bites, or is challenged by a neighbour. Prepare the papers before the ferry, and the dog’s French life begins without a shadow.