Lasso

The Lasso is a loop of rope that is designed to be thrown around a target and tighten when pulled.

The lasso is used in Red Dead Redemption for catching and taming wild horses, and for lassoing escaping criminals and to hogtie criminals to take them to the local jail for a bounty reward. You are also able to lasso criminals around the waist and drag them while riding on your horse.

The Lasso is obtained during the mission Wild Horses, Tamed Passions.

Lassos cannot be used in multiplayer, possibly due to awkward and overpowered interactions it would cause between players.

Use
Using a lasso, aim and 'fire' it like any other weapon, though there is an important distinction: continue to hold the aim button, otherwise, the target will be released.

Aiming the lasso above the target extends the lasso range further than what auto-aim targeting allows.