manofhg wrote:
If the dog were just the dog, not anything around it, you wouldn't know he was behind a screen and watching. The beware of the dog idea would not be implied as a reason for him to be behind the screen, not that a screen would do much to stop him if he really found reason to get out. Also, zoomed in, you can see the screen in some areas.
Additionally, there's a certain charm to the juxtaposition of the docile dog and the threatening "Beware" sign on a rusting, stark enclosure.