 The central part corresponds approximately with the province of Grosseto, extending northward to the Colline Metallifere and the slopes of Monte Amiata, but the region extends northward from Piombino to the mouth of the , and southwards into Lazio as far as Civitavecchia.The Maremma has given rise to, or given its name to, several breeds of domestic animal.These include two breeds of working horse, the Maremmano and the Cavallo Romano della Maremma Laziale, formerly used by "butteri" and "cavalcanti"; the Maremmana breed of large grey cattle; the Maremmano breed of shepherd's guard-dog; and the Macchiaiola Maremmana breed of small pig, so named because it was kept extensively, left to roam in the woodland.