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 privilege women's rights but fail to realize that their privilege as a whole, is a part of the issue at hand. In both India and China, male offspring are privileged and favored over female children. Some manifestations of son preference and the devaluation of women are eliminating unwanted daughters through neglect, maltreatment, abandonment, as well as female infanticide and feticide despite laws that prohibit infanticide and sex-selective pregnancy termination. In India some of these practices have contributed to skewed sex ratios in favor of male children at birth and in the first five years. Other examples of privileging male offspring are