Groom Away the "Ickies" in Your Dog Photos
Now you can click within your selected area and drag it to the area you wish to sample to replace the goober.
As you drag, you see the original area change according to the sampled area you’re hovering over. You need to move your selection around until you find a sampled area that appears to be a good match for the goobered area (top).
When you find an area that blends nicely, release the mouse button and relish in the perfection (bottom). When you find the perfect sampled area, simply release your mouse button and let Photoshop do its job. Your final results appear as if you did no touch-ups at all.