YOU SAID:

I have a cat which is three years old. He doesn't know how to pee, so I'm helping him with my own both hands

INTO JAPANESE

私は3歳の猫を飼っています。彼はおしっこの仕方を知らないので、私は自分の両手で彼を助けています

BACK INTO ENGLISH

I have a three-year-old cat. I'm helping him with my hands because he doesn't know how to pee

INTO JAPANESE

私は3歳の猫を飼っています。彼はおしっこをする方法を知らないので、私は私の手で彼を助けています

BACK INTO ENGLISH

I have a three-year-old cat. I'm helping him with my hands because he doesn't know how to pee