Pass the Cat? (real world version)

&quotDo cats really travel round the city through the postal service?
What invidious scheme is this?
What can the cat-posters hope to gain?
What does the Duchess think?&quot

Well, the receiver should just count himself lucky that it wasn’t a Starveling Cat.

The odd thing is how the cat managed to get into the box without her owner noticing! It’s not like it was an empty box or something.