the restriction of farm animals with rope to a peg is known as

Tethering is the practice of restraining a farm animal by fastening it with a rope or chain to a fixed point such as a peg, stake, or post driven into the ground. The animal can graze within the radius allowed by the length of the rope, and the peg is moved periodically to give the animal access to fresh pasture.

Tagging is the attachment of numbered or coded tags (usually to the ear) for identification purposes. Tattooing is a permanent identification method in which ink is stamped into the skin, commonly on the inner ear. "Tieing" (tying) is a general English word for fastening with a knot, but the specific agricultural term for anchoring an animal to a peg for controlled grazing is tethering.

Tethering is commonly used for goats, sheep, and cattle in smallholder farming systems where fenced pastures are unavailable. It allows the farmer to control where and how much the animal grazes.