Ryan is a main character in the show, played by Elijah Wood, who watches his neighbor's dog. Ryan sees the dog as a man in a furry suit, while everyone else sees it as just a dog. The trouble-making dog is played by Jason Gann, who played the same role in the original Australian version of the show.
In this Street View, the one exposed basement window along the street is blocked by a square flower pot - perhaps to prevent nosy people from peeking in.