About Rabies

Vaccination, in addition to a valid European passport, identification by microchip and the proof of a correct immunization of the dog, cat or ferret against rabies, is still mandatory to leave the country, and even enter a rabies-free Member State of the EU. The same rules apply for every dog, cat or ferret crossing Belgian borders. The validity of the vaccination is calculated according to the instructions in the leaflet of the vaccine and is registered in the European passport. For an initial or so-called primo-vaccination this period starts at the earliest 21 days after the vaccination. Re-vaccination within the validity period is effective immediately; outside the validity period re-vaccination will be considered as a primo-vaccination.

All aditional information, you can find here :

https://www.fasfc.be/animalsanimal-healthanimal-diseases/all-mammal-species