This undated photo provided by Sotheby's shows a painting of a dog by Otto Eerelman titled "Sitting Up," that belonged to the late philanthropist Brooke Astor. Sotheby's said the piece will be offered at a Sept. 24-25, New York auction of some 900 personal items from Astor's Park Avenue duplex and her stone manor in Westchester. (AP Photo/Sotheby's)