Bison generally are not castrated..
A male bison or buffalo is called a bullBull
A castrated bison is commonly referred to as a "bullock" or "steer." Similar to other livestock, this term indicates that the animal has been castrated for purposes such as easier handling or meat production. The specific terminology may vary by region or context.
A castrated young horse is called a gelding.
A castrated elephant is called a musth.
A castrated poultry is called a pullet.
A castrated female pig is called a gilt.
When castrated he will be called a steer no matter how young.
A castrated male swine is called a barrow.
A non castrated male cat is called a tom
A castrated boar is called a barrow.
A castrated male cat is usually just called a "neutered" or "fixed" male.
Castration involves removing the testicles, since women have none to begin with a woman cannot be castrated.