Adobe Photoshop CS5 introduced Content-Aware Fill, which allows users to easily remove objects from images. The tool uses surrounding image areas to determine what should fill the selected region, making it appear as if the object was never there. The document provides step-by-step instructions for using Content-Aware Fill to remove a dog from a sample image, with the dog being seamlessly filled in after selecting it and choosing Content-Aware Fill from the edit menu.