In fact, the division of the standard shows the recognition of a very obvious fact: the Corgi is two different breeds, not one as previously thought. The Welsh Corgi Pembroke and the Welsh Corgi Cardigan are different breeds, originating from 2 counties in Wales. Pembrokeshire, Cardiganshire have always been separated by mountain ranges, and because of this there has been no active interbreeding between the local dog breeds. The mountain range that divides the county is the Cambrian mountain range. It stretches from the southwestern peninsula to northeastern Wales. As a result of closely related crossbreeding, isolated development in isolated mountainous terrain, these breeds have been able to consolidate their individual phenotype specificity.