For every ex-pat family there's often an "ex-pet:" a cat or dog with its paws to the ground and its whiskers in the breeze of a new world. For Christopher Wren, the former New York Times Foreign Correspondent, the creature in question was a small, semi-Siamese called Henrietta. For thirteen years Henrietta traveled with the Wren family across four continents, inspiring enough insights and anecdotes about life abroad to make herself the subject of a book. It's called The Cat Who Covered the World : The Adventures of Henrietta and Her Foreign Correspondent Not bad for a kitten that Christopher had every intention of foisting on another family, before his kids refused to leave without her.