We had a bite in the café in the museum, and while we were eating, Mrs
W spotted something lying on a chair, over on the other side of the
room. There were two women sat, talking, at a table next to it, but
paying no attention; so I wandered over and said, 'Pardon me, ladies,
but is that your cow?'
They looked confused: 'Umm ... no, not mine ...'
'Oh OK,' I said, and got out my camera. And also, of course, got some strange looks; but I'm used to that.
UPDATE, 7 June 2012: here.