A bull is typically ready for slaughter one or two months sooner than a castrated male or a female, and produces proportionately more, leaner muscle.

Though less common than castrated males, bulls are used as draught oxen in some areas.

A castrated male is a gelding.

Bullock (in Australia and New Zealand), an ox, an adult bovine animal used for draught (usually but not always a castrated male)

Formerly, it referred only to the tail of an ox or steer, a castrated male.

As expected, urinary androgens in the castrated males were below normal levels.

However, when resupplied with estradiol, the castrated males regained the ability to induce uterine growth or halt blastocyst implantation.

Guard llama - a llama (usually a castrated male) kept with sheep as a guard.

A modern woman could be considered at least in part a castrated male; a modern man might be a debreasted female.