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
Clothed female, naked male exchange where the more traditionally dominant male is objectified, debased, or humiliated by a more traditionally submissive female. As a result, CFNM fiction frequently includes the clothed female taking on the role of a dominatrix over the nude male. The opposite of CFNM is clothed male, naked female (CMNF). In classical antiquity, the portrayal of nude male form in art (including the exposure of genitals) was considered to be more acceptable than that of the naked female form. By the renaissance, this view had reversed. For example, in Titian's "treatment of Perseus and Andromeda" in the mid-1550s, it is Andromeda