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
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
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
Neutering
…inflammation and reactions to the drugs given to the animal as part of the procedure are all possibilities that should be considered. In male animals, castration involves the removal of the testes (testicles), and is commonly practiced on both household pets (for birth control and behaviour modification) and on…
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.