Jobs & Education1 min ago
dog sterilisation
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For more on marking an answer as the "Best Answer", please visit our FAQ.Castration and Vasectomy are quite different. Castration is the surgical removal of the only organs producing sperm and the main source of testosterone, the hormone that acts on the nervous system to promote male arousal and at a cellular level physical male characteristics. Vasectomy is a procedure to disconnect the vas deferens, a small tube along which sperm travel fom the testes to the urethra. This will not affect sex drive or male characteristics.
If castration is performed after male behaviour (you know what I mean!) has developed, then it will not stop it. For example cats still go through the spraying response, but cannot produce the really smelly stuff. It seems that the testoterone triggers a behaviour response that is learned and then repeated without further need of the hormone.
Female animals that are speyed have their ovaries removed thus denying them the main source of eostrogen, the female hormone, and may display male behaviour. Both sexes produce testosterone and eostrogen and it is the balance of the two that determine sexual development and behavour.