My neighbor's cat has figured out the doorbell. Every time a delivery person rings it, the cat sits on the porch, looks at the delivery person, looks at the box, looks at the neighbor through the window, and then walks inside like it just conducted a business negotiation. The neighbor says, 'He's not greeting the delivery. He's inspecting the merchandise. Last week he sat on a package of cat food for forty-five minutes. The delivery person left.'