The animals

Within the European Union : 

The rules applying to the movement of dogs, cats and ferrets (pets) between EU Member States have been harmonised. To travel within the European Union, dogs, cats and ferrets must have a European passportissued when the animal is identified or vaccinated against rabies.

Owners who want to take their dog, cat or ferret on a trip are obliged to have their animal identified. In Belgium, this is the electronic transponder (microchip) which is used and implanted subcutaneously by the vet. In addition to the microchip, a legible tattoo is still provisionally authorised as a means of identification in most countries.

Dogs, cats and ferrets must be vaccinated against rabies. There is a complex vaccination procedure. It is essential to consult a vet about the procedures in force when travelling within the European Union.

From a third country :

To enter Belgium from outside the EU, animals must be accompanied by a individual certificate the model for which has been laid down at European level. Health requirements differ depending on the country of origin, so it is essential to consult a veterinary surgeon to find out the rules in force for the non-EU country in question.