Playing with the AV setting

On one of the photo blogs I check out, they have a little "challenge" or "assignment" to practice using the AV setting on your camera. To get the look of a subject/object in focus with a very blurry background you are suppose to set the Fstop to its lowest. It varies depending on the lens you use. I decided to capture Dane's presence in the house without actually taking any pictures of him. Here goes....still need practice.