One of the cats threw up in the middle of the night while on a bookshelf. I don't know which one. The above sketch is a generalized conglomeration of all of the suspected cats.
The hit, undiscovered until morning, was right on the history area, notably polar exploration and First World War books.
Despite cleaning, the following books were deemed not salvageable:
DOUBLE VISION Pat Barker
THE LONG RESCUE Theodore Powell
THE SOUTH POLE Roald Amundsen
MEMOIRS OF AN INFANTRY OFFICER Siegfried Sassoon
TESTAMENT OF YOUTH Vera Brittain
And that is today's news ....