Did you see the wild Dartmoor ponies on Hugh's Wild West series, on Sunday evening (11/3/18)? If not, it's worth going on to iPlayer to catch up. As an article at the end of his program, they showed some really lovely filming of the ponies running free across the moorland. Having lived on the moors for at least three and a half thousand years, and in recent centuries been used in the granite industry, they are now no longer needed as working animals, and accordingly, their numbers have dropped drastically - from around 30,000 pure bred ponies in the 1950s to around 1,500 today.
BBC iPlayer: https://www.bbc.co.uk/iplayer/episode/b09w8bd9/hughs-wild-west-series-1-episode-10