Through February 17. Museum hours are 10 a.m. to 5 p.m. Tuesdays and Wednesdays, 10 a.m. to 9 p.m. Thursdays, 10 a.m. to 7 p.m. Fridays and Saturdays, and 12:15 p.m. to 7 p.m. Sundays. For more information, call 713-639-7300 or visit www.mfah.org. $5 to $10.
Museum of Fine Arts Houston, 1001 Bissonnet
In Lady with an Ermine, a coolly elegant young woman of 500 years ago sits clutching a silky weasel. She is thought to be Cecilia Gallerani, the niece/mistress of Ludovico Sforza, the duke of Milan. (Apparently "niece" and "mistress" were not mutually exclusive titles in 15th-century Italy.) The Leonardo da Vinci painting is part of a traveling exhibition of art gathered from Polish collections. While Leonardo gets top billing, the work of artists such as Ingres, Bellotto and Vigée-Lebrun are also on view.