Hinny is easier to obtain when the lower chromosome count, the donkey, is in the male. Therefore breeding for hinnies is more hit-and-miss than breeding for mules." The male hinny or mule can and will mate, but the emission is not fertile. Male hinnies and mules are usually castrated to help control their behavior by eliminating their interest in females. Female hinnies and mules are not customarily spayed, and may or may not go through estrus. Female mules have been known, on rare occasions, to produce offspring when mated to a horse or donkey, although this is extremely uncommon. Since 1527,
Male/Female (Borofsky) as the centerpiece of a re-designed plaza in front of Penn Station. The project celebrated the Municipal Art Society's centennial and was completed in 2004. The sculpture was given to the City as a gift. "Male/Female" has generated considerable controversy ever since its installation. Its defenders cite the contemporary imagery and artistic expression as complementing an urban landscape, while opponents criticize what they decry as a clash with Penn Station's Beaux-Arts architecture, detracting from its classic lines. It has been named both Baltimore's kinkiest piece of public art, "The Invasion of the 50-Foot She-Male" that "bends genders and may very