Fr Ray Blake has the story about the kitten that has been brought in to the opus Dei Retreat Centre in Sydney to keep the Holy Father company. (cf. Aaaaaaaaaaaaah! Kittens)
Now personally, I don't have any pets. Frankly I'm too busy - it would be just one more thing to take care of when I actually get to take a day or two away from the parish. But if I were a noted cat lover (actually I don't mind cats - don't much like dogs on account of having been bitten by one or two when a small boy) I would certainly appreciate the thoughtfulness of anyone who brought a cat in for me to play with, fed and watered the animal and took it away again.
This is so quintessentially Opus Dei - real care and thought for their guest. I bet that it was the women who came up with this great idea.