Castrations refer to the surgical removal of testicles in male animals. However, several synonyms for castrations describe the same process. Some of the synonyms for castrations include gelding, neutering, or orchidectomy, depending on the animal in question. For example, gelding is a term used to describe the castration of male horses, while neutering refers to the surgical removal of testicles in male dogs, cats, or rabbits. Orchidectomy is used to describe the surgical removal of testicles in human males. Although these terms differ in their use, they all refer to the process of removing testicles to render a male animal reproductively incapable.