A New Kind of Companion

So a little while ago, while I was at work, a very sweet lady brought in a pair of cats for their annual exams. They were big, beautiful adult cats, similar in age and markings. In an attempt to make small talk while waiting for the technician to bring the vaccines into the room, I started chatting with the client about her cats' histories - where did she get them from, how long had she had them, that sort of thing. And, in the course of the conversation, I asked her if the cats were littermates.

She paused and thought for a moment, then replied, "No - we have two boxes, and they use them separately."

I really had no idea of how to continue the conversation from there.....