Thanks for the vote of confidence, Anthony - but unfortunately I'm no longer au fait
with EU travel. (We can no longer vac Hooligan due to her epilepsy, so we cannot travel outside Switzerland. My personal experience is now outdated.
That said, here is a link to each of the EU member states' websites. Finella, you should go directly to the source with your questions: http://ec.europa.eu/food/animal/live...tferret_en.htm
I see that the Portugal page is under construction - nonetheless, it gives contact details for the ministry of agriculture, the relevant authority in Portugal.
And general info on inter-EU travel: http://ec.europa.eu/food/animal/live...m_intra_en.htm
(Do I remember that you have docked dogs? If so, make sure you research whether or not that affects your travel to Portugal, and make sure you have your original import papers to allow you to return to Switzerland.)