Nobody correctly answered the latest Obscure Cultural Trivia Contest, which was to name a work of art by a famous 20th-century artists that was destroyed by cats. So I will!
From Dieter Koepplin, "Fluxus, Bewegung im Sinne von Joseph Beuys", in Joseph Beuys: Plastische Bilder 1947-1970 (Verlag Gerd Hatje, Stuttgart, 1990), p. 25 (my translation):
In his 1963 FLUXUS-Exhibition which was hosted by the van der Grinten brothers, Beuys showed many smaller works whose titles hinted at a cooperative opennness. They were named, for example, Demonstration zur Todesstunde von Yves Klein [Demonstration on the Death-Hour of Yves Klein] (1962; Y. Klein died on 6 June 1962 from heart failure; the rather large-format work by Beuys was, incidentally, later destroyed by cats)....
I am disappointed in you lot. Nut up, poets and thinkers!