Teaching your dog to close a curtain is a fun and useful trick that can come in handy in a variety of circumstances. Perhaps this is only one in a variety of useful household activities that you would like your dog to be able to perform. Asking your dog to go around the house closing curtains allows you one less chore, and your dog will love the excuse to jump on the back of the couch to reach the window there. Perhaps you have a little show planned, involving your dog or not, and know the audience would love it if your dog pulled the curtain closed after each scene.
Whatever your reason for teaching your dog to close a curtain, it is a fun and relatively easy trick to teach. It is a good beginner mouth trick, especially for dogs who have difficulty with carrying things. A curtain offers its own resistance, so dogs get to pull against it. Most dogs love games of tug, so it isn’t hard to motivate a dog to pull on a curtain.