Co-conspirators?

We left the house for a couple of hours this morning. When we came back, the dog was chewing on her rawhide bone, and the cat was playing with his catnip mouse. What's so strange about that? Both the mouse and the bone were on top of the refrigerator.

I know which animal has the dexterity to make his way onto the refrigerator and retrieve his mouse. What I don't know is how the dog convinced him to also get her bone down. I'm thinking we may have to set up a nanny-cam if we're going to leave these two home alone.