Cornwall , England? You must be from North America LOL We only know the one Cornwall. America has at least two (one in Vermont and one in New York state). It's a small county, as indicated, and not one which has unique climate or environments such as would bar any animal from existing, evolving or surviving there alone.The lesser white-toothed shrew is only found in Britain on the Isles of Scilly, 28 miles from the Cornish coast, but a) the Isles are administered locally by their own Council, not from Cornwall and so legally are not strictly part of Cornwall and b) this shrew is found elsewhere in Europe. So it seems that there are no animals which are specifically native to Cornwall (even at a stretch of the definitions!) Even the county flower, the Cornish heath (erica vagans) is not exclusive to Cornwall: it's also found in Northern Ireland