Since October 1, 2004, all dogs, cats and ferrets in the European Union must have a single passport model to travel between member countries; thus, free movement is facilitated.
The establishment of the passport model is uniform throughout the national territory, and its implementation is the responsibility of the Autonomous Communities. It has predetermined measurements, the covers in blue and the stars of the member countries in yellow, with the words «European Union» and the name of the member state.
This unique veterinary document uses the official language of the country of origin and English, and reflects the identification number of the animal that corresponds to the number of the microchip.
The passport also certifies that the animals have been vaccinated against rabies, and contains details about other vaccinations, even those not required by law. It also includes a section on clinical examinations and legalization, so that it can be used for trips outside the European Community.