Sheep are primarily pasture animals, and in most countries in the world pasture constitutes the largest part of their annual diet. Thanks to the shape of the head (muzzle), the mobility of the lips, sheep can graze and consume pasture even on the most inaccessible terrains, and retrieve blades of grass from places inaccessible to other types of domestic animals. Sheep gnaw grass low, close to the surface of the ground, making excellent use of the incisors in the lower jaw and the dental plate of the upper jaw. Pasture is the cheapest and most desirable fodder for sheep. The higher the proportion of pasture in the ration, the lower the costs of feeding the sheep, and thus the more profitable sheep production. Sheep farming in Croatia is based on the use of natural pastures where sheep stay during the growing season, while there are very few artificial sown and grazing pastures. In order to increase the efficiency of the use of pastures and facilitate the grazing process, breeders from ancient times to the present have fenced pastures for sheep in different ways and restricted their movement. This paper describes different ways and systems of pasture fencing, from the oldest traditional ones, the so-called drywall, to modern sown pastures fenced by an "electric shepherd". Fencing pastures with stone, without binding construction materials (cement, lime, etc.) is one of the oldest ways to limit the movement of sheep not only in Croatia (especially in its Mediterranean areas), but also in other countries. Grazing systems are an important part of every sheep farm, because they determine its way of functioning, directly affecting the quality and efficiency of sheep feeding, the consumption of human labor and the profitability of sheep production.