What Is an Animal Passport? Pet, Cattle, Horse and Digital Livestock IDs Explained

An animal passport is an identity document or record that links one animal to a unique identifier, its owner and its health history, especially vaccinations. The term covers several different things. The best known is the official European pet passport for dogs, cats and ferrets. There are also government cattle and horse passports used to trace livestock. Finally, there are digital livestock passports, such as Animal Passport, which identify farm animals by their unique nose print. Which one you need depends on the species and on whether you are travelling, trading or proving ownership.

As of October 2026, European Union pet-travel rules have just changed. This guide explains each type of animal passport from primary sources and shows clearly where a biometric livestock passport fits in and where it does not.

Animal passport definition: what the document actually does

Every animal passport does the same basic job: it proves that this animal is the one described in the record. The World Organisation for Animal Health (WOAH, formerly OIE) describes animal identification and traceability as tools for animal health and food safety. In Chapter 4.2 of its Terrestrial Animal Health Code, WOAH says they support disease-outbreak management, vaccination programmes, movement controls, certification and fair trade. WOAH also states that national identification systems should be the responsibility of each country's Veterinary Authority.

In practice, an animal passport usually has three parts:

• An identifier: a microchip code, ear-tag number, tattoo or biometric pattern.
• A description and owner: species, breed, colour or markings, and the registered keeper.
• A history: vaccinations, treatments and, for livestock, movements between holdings.

The European pet passport (dogs, cats and ferrets)

When most people search for "animal passport", they mean the European pet passport. According to the European Union's Your Europe portal, it is "an identification document, which follows an EU standard model and is mandatory for travel between EU countries." It is issued for dogs, cats and ferrets only. It records the pet's microchip or tattoo code, rabies vaccination, owner contact details and the issuing vet.

What changed in 2026

The European Commission says non-commercial pet travel within the EU is now governed by Commission Delegated Regulation (EU) 2026/131. The passport model is set out in Commission Implementing Regulation (EU) 2026/705. Under the 2026 regulation, pet passports are intended only for pets kept in the Member State where their owner has their main residence. Owners who live outside the EU and stay only temporarily or seasonally are expected to use an animal health certificate instead.

Existing passports do not become invalid overnight. The European Commission (2026) lists these models as still valid for travel between EU countries:

• passports on the Commission Decision 2003/803/EC model issued before 29 December 2014
• passports on the Implementing Regulation (EU) No 577/2013 model issued before 22 April 2026
• passports on that same 577/2013 model issued under transitional rules before 1 January 2028

Requirements for travelling between EU countries

The European Commission (2026) and Your Europe set out the core conditions in this order:

1. Microchip first. The pet must be microchipped before its rabies vaccine. A clearly readable tattoo applied before 3 July 2011 is also accepted.
2. Rabies vaccination. An authorised vet gives the vaccine when the animal is at least 12 weeks old. A primary vaccination becomes valid no sooner than 21 days after the course is completed.
3. Passport issued by an authorised vet. The vet records the microchip code and vaccination details.
4. Tapeworm treatment for dogs, where required. Dogs entering Finland, Ireland, Malta, Norway or Northern Ireland need treatment against Echinococcus multilocularis 24 to 120 hours before entry. The treatment is recorded in the passport.
5. Travel limits. No more than five pets may travel per non-commercial movement. Larger groups are allowed only for registered competitions, exhibitions or sporting events, and only for animals over six months old.

Your Europe states that a pet passport is valid for life as long as the pet's health information, such as the rabies vaccination, remains in date. Other pets, including birds, rabbits, rodents and reptiles, do not get an EU pet passport. Their owners must check national rules in the destination country.

Travelling from the UK or the US: why many owners need a certificate instead

Two groups of travellers often assume they can get an EU pet passport when they cannot.

Great Britain

GOV.UK states that if you live in England, Scotland or Wales, you cannot use a pet passport to enter the EU, even one issued in the EU. Your Europe notes that this has applied since 1 January 2021. Instead, your vet issues an animal health certificate. According to GOV.UK (2026), it is valid for 10 days for entry into the EU, for 6 months of onward travel within the EU, and for 6 months for re-entry to Great Britain. You need a new certificate for each trip. Residents of Northern Ireland can still use an EU pet passport.

United States

The United States Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS) answers the question "Can I obtain an EU pet passport in the United States?" with a single word: "No." Its EU pet passport page was last modified on 1 September 2026. US pets travelling to the EU need an EU health certificate. It must be issued by a USDA-accredited veterinarian and endorsed by APHIS. Pets that already hold a valid EU pet passport, with rabies vaccination recorded by an EU vet, can use it to return to the EU on a non-commercial movement. APHIS also warns that US vets must not write in passport sections reserved for an EU "Authorized Veterinarian".

Airlines may set extra rules on top of these. APHIS advises owners to check with their airline before booking.

Livestock passports: cattle and horses

For farm animals, a passport is about traceability, not holidays. Livestock passports let authorities follow an animal from birth to slaughter so that disease outbreaks can be contained.

Cattle passports

Under Article 112 of Regulation (EU) 2016/429, the Animal Health Law, operators keeping cattle must identify each animal individually by a physical means of identification. Cattle moving between Member States must have an identification document from the competent authority, and births, deaths and movements must be reported to a national database.

In England and Wales, the British Cattle Movement Service (BCMS) and Rural Payments Agency explain the process. Each calf needs two official ear tags, a primary and a secondary tag. For cattle and buffalo, the keeper must register the birth by the day the calf is 27 days old to receive a free cattle passport. That passport records "the animal's movements from birth to death." BCMS warns that without a passport you cannot move the calf or enter it into the food chain.

Horse passports

GOV.UK states that a horse passport, also called an equine passport, is required for horses, ponies, donkeys, zebras and hybrids. It describes the animal, lists vaccinations and names the registered owner. It must stay with the animal at all times. New owners must contact the Passport Issuing Organisation within 30 days to update ownership details.

Digital livestock passports and muzzle biometrics

Ear tags and paper documents work well until they are lost, torn out or destroyed. That gap is what biometric livestock passports aim to fill. A cow's muzzle carries a ridge-and-bead pattern that researchers compare to a human fingerprint.

The evidence is promising but still developing. In a 2022 peer-reviewed study in Animals, researchers at the University of Nebraska-Lincoln and partner institutions tested 59 deep-learning models. They used 4,923 muzzle images from 268 US feedlot cattle, and the best model identified individual animals with 98.7% accuracy. The authors describe muzzle biometrics as a noninvasive method that "need[s] validation" as machine learning advances. Results from a controlled dataset do not automatically carry over to every farm, light condition or breed.

How Animal Passport works

Animal Passport is a digital livestock passport built on muzzle biometrics. The farmer, field officer or rescuer photographs the animal's nose print with a phone. The record then binds that biometric to:

• the owner
• breed
• estimated age, taken from a dental photograph and shown with a confidence score
• body condition score on a 1 to 5 scale, taken from a side-profile photo
• vaccination history

Because the identifier is the animal's own nose print, it cannot fall off the way a tag can. Age and body-condition estimates are management aids, not a veterinary diagnosis.

Field use: the 2025 Pakistan floods

The United Nations Office for the Coordination of Humanitarian Affairs (OCHA) reported in October 2025 that Punjab, Pakistan, had its worst flooding in four decades. Across the country, more than 6.9 million people were affected and over 22,800 head of livestock were killed. During livestock flood rescue in Pakistan in August 2025, Animal Passport was used so that farmers could reclaim their animals after paper tags washed away. In that setting, matching a rescued animal to its owner by nose print replaced the tag the floodwater removed.

Animal passport types compared

Which animal passport do you need?

• Taking a dog, cat or ferret between EU countries and you live in the EU: get a European pet passport from an authorised vet.
• Travelling from Great Britain, the US or another non-EU country: you will usually need an EU animal health certificate. Check GOV.UK or USDA APHIS for your route.
• Keeping cattle or horses in the UK or EU: you are legally required to hold the government passport for each animal.
• Proving who owns a herd, keeping digital health records or protecting animals against tag loss: a biometric digital passport such as Animal Passport can sit alongside official tags and documents. It does not replace them where the law requires them.

Important distinction: Animal Passport is a biometric livestock identity platform. It is not an EU pet passport, an animal health certificate or a government-issued travel document, and it does not provide legal or veterinary advice.

For more guides on livestock identification and traceability, visit the Animal Passport blog.

By Animal Passport. Last updated 2 October 2026. Pet-travel rules change frequently; always confirm current requirements with the official authority for your route before you travel.