Naughty boys

I came down stairs this morning from my nights sleep, to find that the dogs were not laying on their beds in the kitchen. Then I noticed that I had not shut the door to the living room. I slowly crept onto the living room to find the two of them on the sofa, where they are never normally allowed.
I'm sure that they were pretending to be asleep. As I walked out of the room I'm sure I heard a little Muttley snigger!