The three things every pet needs, in order
EU pet travel rules are strict about sequence, not just paperwork. Getting the order wrong is the single most common reason a pet's documentation gets rejected or a family has to delay their move.
- Microchip first. Your dog or cat needs an ISO 11784/11785-compliant microchip (the 15-digit international standard) implanted before anything else happens. A vet must scan and confirm the microchip before administering the next step.
- Rabies vaccination second. If this is your pet's first rabies vaccination after the microchip — or the first after any lapse in coverage — it counts as a "primary" vaccination under EU rules and is valid for only one year, even if the vial itself is labeled as a 3-year vaccine.
- Wait at least 21 days. EU rules require a minimum 21-day wait after a primary rabies vaccination before your pet can travel, to allow immunity to develop. There is no way to expedite this — plan your pet's paperwork around this window from the start, not as an afterthought once flights are booked.
One piece of good news: because the US, UK, and EU are all classified as low-rabies-risk under EU rules, pets from either country do not need the additional rabies antibody (titer) blood test that owners moving from higher-risk countries must arrange.
Book the USDA-accredited or Official Vet appointment for the health certificate as early as your travel date allows — availability for these specific appointments (not just any vet visit) is the real bottleneck for pet relocations, not the paperwork itself.
If you're moving from the US
US pet owners need an EU health certificate — not the older-style USDA pet passport — completed by a USDA-accredited veterinarian and then formally endorsed by USDA APHIS (Animal and Plant Health Inspection Service) before travel. This is a two-step process: your vet completes the paperwork, then APHIS reviews and endorses it, so budget time for both steps rather than assuming a single vet visit is sufficient.
Timing matters here too: your pet must enter the EU within 10 days of the date APHIS endorses the certificate. Endorsement too early or a delayed flight can push you past that window, at which point the certificate is no longer valid and the process has to restart.
If you're moving from the UK
Since Brexit, a GB-issued pet passport is no longer valid for entry into the EU. Instead, for each trip you need an Animal Health Certificate (AHC) issued by an Official Veterinarian in the UK. The AHC is valid for entry into the EU within 10 days of issue, and once you're in the EU it remains valid for onward travel within the EU for up to four months — useful if your move involves more than one leg of travel, but it does not cover a return trip to the UK, which needs its own separate paperwork.
Because the AHC has to be issued shortly before travel, UK owners should treat the vet appointment as one of the last steps to schedule, not one of the first — booking it too far ahead of your actual flight risks the certificate expiring before you travel.
What's changing in 2026
New EU legislation (EU 2026/131) covering the non-commercial movement of dogs, cats, ferrets, and birds took effect on 22 April 2026. The most practical change for US and UK owners is a new certificate format, which becomes mandatory from 1 October 2026 — certificates issued on the old format remain valid for travel up until 30 September 2026. The new format adds an owner declaration that you'll need to read and sign as part of the certification process.
If your move falls right around that transition date, confirm with your vet which certificate format they're issuing and that its validity window actually covers your travel date — a certificate issued on the outgoing format just before the cutover could still be valid, but it's worth double-checking rather than assuming.
Timing it with your own move
Pet paperwork runs on its own clock, largely independent of your visa timeline, so it's worth planning them side by side rather than sequentially. The 21-day rabies wait plus certificate scheduling means most owners should start the microchip-and-vaccination sequence at least a month before their intended travel date — earlier if your pet has never been vaccinated for rabies before, since a same-day vaccination-and-travel plan simply isn't possible under EU rules.
If you're also navigating your own Spanish residency timeline, the pet side of the move typically doesn't need to wait for visa approval — you can complete the microchip and vaccination steps well before your visa is granted, so long as the certificate itself is dated close enough to your actual flight.