There are two categories of wild goat in this part of the world. The most well known are the Kashmiri goats on Great Orme, Llandudno which have recently achieved national and international publicity by roaming the streets of the town. Although presented as a recent development, it happens on a smaller scale quite regularly since there is no physical barrier to their coming down into the town. As the wikipedia entry notes, these were a gift to Queen Victoria in 1837. The web references tell you all you need to know about them.

Not so well known are the flocks of feral goats that are found here in Padarn Country Park and the Glyderau, the range of mountains that start above my village and run south east into the Snowdonia National Park. They also graze further south to the village of Beddgelert where they can be a nuisance, as everywhere, for their capacity to eat everything in sight in the gardens, and indeed jump out on the narrow stretch of the road A498 in front of your car, although of course sheep will do this as well. https://www.welshmountainzoo.org/animals/welsh-mountain-goat

These are described as feral on the assumption they were originally domesticated, possibly even deliberately let loose to graze, since they can survive in the wild rather better than most species of sheep. The earliest reference I can find to their existence here is by Samuel Johnson, the compiler of the first English dictionary. He visited Dolbadarn Castle in 1774 (though he does not mention it by name), and his diary of the journey says that a 10 yr old girl who was in the party with him counted 149 of them. If you do a web search for “feral goats Snowdonia” you will get lots of references.

These flocks migrate of their own accord from the mountain tops in summer to valleys in the winter and vice-versa, which would explain the widespread practice of transhumance around the world, including here (see the section on Wales in the wikipedia article, and the widespread Welsh Hafod (summer pasture/house) and Hendre (winter pasture/house). They are an everyday sight in the woods here at the moment, but I would expect them to start moving up the mountain in the near future. Quite how their “clocks” decide the timing of the move I do not know.

There are also wild ponies on the mountains a few miles away.