Holyhead is a small port town on Anglesey, not a city — so this page is named around it for the same reason our Dover and Belfast pages are named around their crossings: it’s the actual place people search for when they’re planning this specific journey. What follows covers the wider North Wales/Anglesey crossing generally, not Holyhead alone.
Republic of Ireland, not Northern Ireland — the distinction that matters most
This is genuinely the most useful thing on this page, so it goes first: taking a dog from Great Britain to the Republic of Ireland is a different process, with different paperwork, from taking a dog to Northern Ireland — even though both sit on the same island.
We checked this directly against Irish government sources (Citizens Information and the Department of Agriculture, Food and the Marine) rather than take it on trust. To bring a dog into the Republic of Ireland, you need an Animal Health Certificate (AHC) or a valid EU pet passport, a rabies vaccination, and — this is the detail that trips people up — tapeworm treatment given by a vet between 24 and 120 hours (1 to 5 days) before you arrive, recorded in the passport or certificate. It’s effectively the same set of requirements as travelling to France.
Compare that with our Belfast pet transport guide: travelling to Northern Ireland only requires a free Northern Ireland Pet Travel Document, with no rabies vaccination and no tapeworm treatment needed at all.
Same island, two genuinely different rulebooks — and getting them mixed up is a common and consequential mistake. Turning up at Holyhead with only a Northern Ireland PTD, thinking it covers you for Dublin, means you don’t have what you actually need. If there’s any doubt at all about which part of Ireland you’re travelling to, it’s worth checking before you book anything.
The Holyhead-Dublin ferry crossing
Stena Line’s own current guidance confirms a genuine point of difference on this specific route: pet kennels on the Stena Estrid, which operates the Holyhead-Dublin crossing, “can be accessed throughout your journey” — meaning you can visit your dog and exercise them under controlled conditions during the roughly three-hour crossing, rather than being separated from them for the whole journey. This is a real difference from the Cairnryan-Belfast route’s separate Pet Lounge setup, where access works differently.
Pre-bookable pet-friendly cabins are also available for up to two pets, and dogs can stay in your vehicle for free if you’d prefer that instead. Whichever option you choose, book it in advance — pet spaces on this route are limited and go early, particularly around peak travel periods.
Pet transport operators — genuinely thin here, and worth saying so plainly
This is an honestly under-served area for pet-specific transport, and we’d rather tell you that plainly than pad this section out.
One regionally branded name came up in our research: Animals At Home, North Wales Coast, which has historically offered pet taxi and animal ambulance services covering routes between Holyhead and Ireland, alongside towns like Rhyl, Prestatyn, Colwyn Bay and Llandudno. However, when we checked their own website directly, it stated that services in this area are currently paused while they look for a new franchise owner — so we’re naming them for awareness, not as a live recommendation. Check their current status directly before assuming they’re operating.
We also checked for general local taxi firms in the area — Chubbs Cabs, Sean’s Taxis and similar operate around Bangor and Holyhead — but none of them offer pet-specific transport, and a general taxi isn’t a substitute for a properly equipped, DEFRA-aware pet transport service.
National operators with dedicated coverage of this route — names like The Pet Bus and similar UK-wide specialists — are a more reliable option here than searching for a local independent that may not currently exist. As with every page in this directory, ask any operator directly for their DEFRA authorisation reference regardless of what you find published, since Type 1 (up to 8 hours) authorisation isn’t published anywhere public, while Type 2 (over 8 hours) is published monthly by the Animal and Plant Health Agency.
What to have ready before you travel
Beyond the Republic of Ireland paperwork above, our pet transport hub covers the general questions worth asking any operator and red flags to watch for wherever you’re travelling. If you’re planning to bring a puppy into the UK rather than travelling with a dog you already own, that’s a different situation with its own rules — our guide to puppy couriers covers what’s different about that journey specifically.
For dogs that find travel or a longer crossing stressful, some owners find a natural calming supplement helps take the edge off — worth having a look around Calmshops. It’s not a substitute for proper preparation, just something that can help alongside it.
Frequently Asked Questions
Here are some common questions dog owners may have about this topic.
Is travelling to the Republic of Ireland the same as travelling to Northern Ireland?
No — this is the single most important thing to get right. The Republic of Ireland requires an Animal Health Certificate, rabies vaccination, and tapeworm treatment, much like travelling to France. Northern Ireland only requires a free Northern Ireland Pet Travel Document, with no vaccination or tapeworm treatment needed. Check which part of Ireland you’re actually travelling to before assuming which rules apply.
When should my dog have tapeworm treatment before arriving in the Republic of Ireland?
Between 24 and 120 hours (1 to 5 days) before arrival, given by a vet and recorded in your dog’s AHC or EU pet passport.
Can I stay with my dog during the Holyhead-Dublin crossing?
On the Stena Estrid, yes — pet kennels can be accessed throughout the journey, and dogs can be exercised under controlled conditions. This is different from routes where pets are separated from their owners for the full crossing.
Are there local pet transport operators based in Holyhead?
Genuinely few. The one regionally branded operator we found, Animals At Home North Wales Coast, currently has its services paused according to its own website. National UK-Europe pet transport specialists are a more reliable option on this route at present.
Do I need different paperwork for Holyhead-Dublin than for the Dover-Calais crossing?
The core requirements (AHC, rabies vaccination, tapeworm treatment window) are the same EU-facing rules either way. What differs is the ferry-specific process and facilities — check with Stena Line directly for current booking and check-in details.
Written by Georgiana & Figo. Have a question about pet transport? Have a look around Calmshops or drop us a line — we answer everything.
