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
The Female of the Species (poem) "Female of the Species". The title was again lifted in 2006 for Joanna Murray-Smith's satirical play "The Female of the Species". A 1946 novel by James Hadley Chase was titled "More Deadly Than The Male". Another novel, written by Mindy McGinnis, is titled “The Female of the Species.” In 1984, Off Centaur Publications released an audio tape cassette album titled "The Horse-Tamer's Daughter" featuring a song based on the poem, set to music by Leslie Fish and performed by Julia Ecklar. In 1998, the song was nominated for a Pegasus Award for "Best Adaptation" by a ballot of science fiction