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Travelling with your Dog on Public Transport in Ireland - these are the current policies in terms of Dogs on Public Transport in Ireland (see full policy plus link at end of article):
Assistance Dogs and Working Guide Dogs allowed.
Pet dogs at driver’s discretion.
No animals are allowed on board with the exception of guide dogs.
Note: No reference to Assistance / Therapy Dogs.
Iarnrod Eireann / Irish Rail including DART
Small dogs can be carried free of charge in the passenger compartment of services provided they travel on the owners lap. Larger dogs can only travel in Goods Compartment (Dublin-Cork and Dublin-Belfast routes only), where they must be chained and muzzled, or crated.
Guide-dogs, Assistance Dogs and Therapy Dogs allowed. No other dogs / pets allowed.
Private Bus Operators
Private bus operators have their own policies (see below).
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Full Policies & Links
Passengers With Assistance Dogs
Assistance dog must wear its harness or jacket so that the driver knows it is an assistance dog.
There is no limit to the number of assistance dogs the bus driver can allow on a bus, as long as there is space.
The assistance dog is the responsibility of its owner and must be kept under control, whether it is in a harness, leash or carrier.
An assistance dog must not block the aisle or travel on a seat.
Animals other than guide dogs are carried on Dublin bus services at the discretion of the driver.
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Guide dogs and Assistance dogs accompanying passengers are permitted to travel on all Bus Éireann services free of charge and without restriction. An Assistance dog must be clearly identifiable either by coat or harness to distinguish it as a working dog and not a pet.
Apart from the foregoing exceptions, dogs, cats or any other animals or live fowl of any description WILL NOT be carried.
Both the policy and onboard signs state: No animals are allowed on board with the exception of guide dogs.
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Iarnrod Eireann / Irish Rail
Iarnrod Eireann operates intercity passenger train services between Dublin and Belfast, Sligo, Ballina, Westport, Galway, Limerick, Ennis, Tralee, Cork, Waterford and Rosslare Europort.
Iarnród Éireann also jointly operates the Dublin to Belfast Enterprise service with Northern Ireland Railways.
Regional services include the new Limerick to Galway line, Cork commuter network including the new Cork-Midleton line, Limerick Junction to Waterford, and Limerick to Ballybrophy (via Nenagh) services.
Pets on Trains
Small Dogs and Cats
Small dogs can be carried free of charge in the passenger compartment of services provided they travel on the owners lap.
The dog must be kept on a lead at all times unless contained in a basket or in an appropriate container.
Small cats can be carried free of charge in the passenger compartment of services provided they travel in a secure carrier on the customer's lap.
Animals are not allowed in restaurant cars with the exception of Guide dogs or Assistance dogs.
If a customer objects to the presence of a dog in their carriage, the owner will be requested to move to another part of the train.