People in the UK can take their dogs, cats and ferrets to other European Union (EU) countries, therefore in Belgium too, and return with them to the UK. Dogs, cats and ferrets must not have been outside any of these countries in the 6 calendar months before entering the UK.
Dogs, cats and ferrets entering the UK under PETS may only do so on certain sea, air and rail routes. Dogs, cats and ferrets entering the UK from non-qualifying (unlisted) countries must spend 6 months in quarantine on arrival.
The rules are to keep the UK free from rabies and certain other diseases. The name of the legal rules for travelling with your pet is PETS (Pet Travel Scheme).