The Ouessant is one of the smallest breeds of domestic sheep. The Beltex is a breed of domestic sheep. Many specialist terms relating to domestic sheep are used. The Jacob is a British breed of domestic sheep. The Suffolks are a common breed of domestic sheep. The Suffolk is a British breed of domestic sheep. The foundation buys grazing permits from domestic sheep ranchers. The exact line of descent between domestic sheep and their wild ancestors is unclear. The mouflon is thought to be the ancestor for all modern domestic sheep breeds. Sounds made by domestic sheep include bleats, grunts, rumbles and snorts. The Icelandic sheep () is a breed of domestic sheep. Gradually they were mixed with varieties of domestic sheep, especially crossbreeding with the racka. It has also been suggested that crossing them with domestic sheep could have agricultural benefits. The principal livestock activity is domestic sheep raising. Sheep's milk (or ewes' milk) is the milk of domestic sheep.