Thanks for this link!! We dog sit a golden retriever ( belongs to DH's nephew) and he does exactly the same when caught doing something wrong....plus he goes and "hide" behind a flower pot. He thinks his size is the size of his head...
[url=http://www.youtube.com/watch?v=B8ISzf2pryI'>This video[/url'> of a dog who was caught eating the cat's treats is so cute. The poor dog almost looks human with his guilty face and body language.