I’ll be in Dublin soon and would like to pick up a “Beware of Dog” sign in Irish. Any idea where I might find such a thing?
Try Carrolls Irish Gifts in the Temple Bar area. If they don't have it, maybe they could recommend somewhere to go.
If you can't find one, you could always have one printed. Beware of Dog in Irish is "Seachain an Madra" which can be translated as Avoid the Dog but has the same meaning.
If you can find a hardware store maybe they would have them there in their To Let, etc sign aisle/department.