There are sheep and horses on Llanddwyn island (Ynys Llanddwyn). To keep them on the island all the pathways to the island and to the beaches are protected by either gates like this one or by cattle grids. The island is only really an island for about 4 hours a day so as soon as you are on the beach you could just walk over to the mainland and into Newborough forest.
Wales (Cymru in the Welsh language) is part of the United Kingdom of Great Britain and Northern Ireland. The major cities are Cardiff, Swansea, Newport and Bangor. The city of St. Davids is the smallest city in the UK with a population around 2000. Wales itself has a population of around 3 million. The Welsh language is spoken by around 20% of the population.