Hybrid (biology) are the mule, a cross between a female horse and a male donkey, and the hinny, a cross between a female donkey and a male horse. Pairs of complementary types like the mule and hinny are called reciprocal hybrids. Among many other mammal crosses are hybrid camels, crosses between a bactrian camel and a dromedary. The first known instance of hybrid speciation in marine mammals was discovered in 2014. The clymene dolphin ("Stenella clymene") is a hybrid of two Atlantic species, the spinner and striped dolphins. Cagebird breeders sometimes breed bird hybrids known as mules between species of finch, such
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