Soot!

Someone has taken a log from the fire to play with

"We didn't do it!"

The Basenji on the left is innocent.  She owns up to everything, even when it couldn't possibly have been her that committed the crime.  In any case, she gave up mischief like this some years ago.  Note the guilty party (who looks a lot like Tommy) has arranged his features into that sly insolent look we come to know so well.

and on another occasion ...

Futon!

It must be admitted that this futon did have a small hole where one of the buttons had come off.  Someone (who looks rather like Tommy) thought it best to see what was inside - just to make sure.  He then displayed his findings all over the room.