Access denied.

River once again tried to get behind the entertainment center.  This time, the Coke box and a 25 lb box of hay stood in her way.  She was so frustrated that her plans were thwarted that she thumped.

Genuine surprise to see me bunny wrangle her back into the living room.

What witchcraft allowed you to know I was there?!  I'll be watching you from now on.
Being deaf, I honestly don't think River realizes that thumping produces noise.