The dog or cat must be identified by means of a microchip and must have a European passport.
The dog or cat must be vaccinated against rabies. The first vaccination must be given at least 21 days before departure, and must be repeated within the validity period. A vaccination after this period is considered a first vaccination and is only valid again after 21 days.
A puppy/kitten must be at least 12 weeks old when receiving its first rabies vaccination, which means they can only cross the border from the age of 15 weeks.
Dogs must always be kept on a leash within built-up areas, except for assistance dogs. Outside built-up areas, dogs may be off-leash, except on paved roads and public places. Since each municipality can set its own rules regarding leash requirements, we recommend checking the specific rules of the municipality before your visit.
When traveling with more than five animals, they must undergo a clinical examination, and their passport must include an additional certificate issued by the official veterinarian of the country of departure. The animals will then be subject to commercial transportation regulations.
The non-commercial transportation rules still apply when transporting more than five animals for participation in competitions, exhibitions, sporting events, or training, as long as the animals are older than 6 months and the owner can provide written proof of participation.
Don’t forget to check the regulations for all the countries you’ll be traveling through,
such as Germany or Belgium.
Source(s): Netherlands Food and Consumer Product Safety Authority