Sheep are mammals found throughout Old School RuneScape. Players can use shears on most sheep to gain a piece of wool, which they can make into a ball of wool. Sheep that can be sheared appear bulkier than the ones that have been recently sheared. Sheep will sometimes try to get away from players when they are attempting to shear it. There are also talking sheep in Zanaris.
North-east of Lumbridge, inside the sheep pen there, is a pair of penguins disguised as a sheep. If the player speaks to it before starting Cold War, they will say "That's a sheep... I think. I can't talk to sheep". They play an important part in the Cold War quest. If players attempt to shear this fake sheep, they will not get any wool and it will back away.
- North of Lumbridge
- Between Hemenster and East Ardougne, behind Richard's Farming Shop. Sick sheep outside the pen cannot be sheared.
- The Fisher Realm, after the completion of Holy Grail