YOU SAID:

I am a cat and it makes me happy to kill mice

INTO JAPANESE

私は猫です。ネズミを殺すと幸せになります

BACK INTO ENGLISH

I am a cat. Killing a rat makes you happy

INTO JAPANESE

吾輩は猫である。ネズミを殺すと幸せになります

BACK INTO ENGLISH

I am a cat. Killing a rat makes you happy