Castration
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Castration is any action, surgical, chemical, or otherwise, that disables the function of testes in males: the male gonad. Surgical castration is bilateral orchiectomy, while chemical castration uses
A 15th century Ottoman medical illustration by Sabuncuoğlu Şerafeddin depicting an operation for castration
The Castration of Uranus: fresco by Vasari and Cristofano Gherardi (c. 1560, Sala di Cosimo I, Palazzo Vecchio, Florence)
The procedure of castration as punishment during the 16th century
An Italian soldier who was castrated and emasculated during the Second Italo-Ethiopian War.
Neutering
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Neutering, from the Latin neuter, is the removal of a non-human animal's reproductive organ, either all of it or a considerably large part. The male-specific term is castration, while spaying is usual
Castration
…reproducing); it also greatly reduces the production of sex hormones, such as testosterone and estrogen. Surgical castration in animals is often called neutering. Castration has been used by humans for various types of slavery, such as in the eunuchs of the Ottoman Empire, as well as a terror tactic in warfare…
Feline uterus
Closed spaying incision on a female dog, taken 24 hours after surgery
Surgical incision site of a female cat
Closed castration incision on a male dog, taken 12 hours after surgery