Carting
Newfoundlands originally carted barrels and provisions to the boats for fishermen. They then went on the boats and acted as lifesavers, should anyone fall overboard. The carts have changed in shape and size, but the dogs are happy to pull a cart for fun. It's relatively easy moving forward, but try backing up - there is a knack.
Dogs must be over 15 months old to take part in carting.