Equus (genus) a female horse. With rare exceptions, these hybrids are sterile and cannot reproduce. A related hybrid, a hinny, is a cross between a male horse and a female donkey. Other hybrids include the zorse, a cross between a zebra and a horse and a zonkey or zedonk, a hybrid of a zebra and a donkey. In areas where Grévy's zebras are sympatric with plains zebras, fertile hybrids do occur. Equines have significant differences in size, though all are characterized by long heads and necks. Their slender legs support their weight on one digit (which evolved from the middle digits). Grévy's
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