Castration is a medical procedure that involves the removal of the testicles in males. This can be done for various reasons, including medical conditions, behavioral issues, or population control in animals. The procedure can be performed surgically or through chemical means, and it results in the loss of testosterone production. In animals, such as dogs and cats, castration is often recommended to prevent unwanted breeding and reduce certain aggressive behaviors. In humans, it may be used as a treatment for specific medical conditions, including certain types of cancer. Castration can have significant physical and psychological effects on individuals.