Sheep farming is an environmental issue in Wales. Much of the nation is rural countryside and sheep are farmed throughout Wales. The woollen industry in Wales was a major contributor to the national economy, accounting for two-thirds of the nation's exports in 1660. Sheep farms are most often situated in the country's mountains and moorlands, where sheepdogs are employed to round up flocks. Sheep are also reared, however, along the south and west coasts of Wales.[1] In 2017 there were more than 10 million sheep in Wales and the total flock made up nearly 33% of the British total.[2] In 2011 sheep farming accounted for 20% of agriculture in Wales.[3]