古时候可能很少阉割猫或狗。

In the ancient world, it was probably rare to castrate a dog or cat.

当时处于实验中的化学阉割作为对他的“治疗”。

He was given experimental chemical castration as a "treatment".

我们要求大众阉割自家的狗，并对它们进行紧密监视。

We ask the public to have their dogs neutered and keep them under close supervision.