Let the Cat in the Bag

Give a cat a brown paper sack and he will amuse himself for hours.

Or at least fifteen minutes, and then he'll race around the house feeling quite brave and daring for the next fifteen.

Can you tell he felt dangerous?

The bag is now lying ripped on the kitchen floor.  Right by the two pairs of tennis shoes and the assorted grass, dirt and dust bunnies.  I should probably work on removing all of them...