Brain Teaser Of The Day: Delivering The Package

A delivery guy goes to a home to deliver a package.

As he reaches the main gate, he notices a vicious-looking dog whose collar is attached to a chain fastened to a tree. The chain is long enough to allow the dog to reach the front door of the house.

How can he reach the front door to allow him to deliver the package?

Brain Teaser Of The Day: Delivering The Package