YOU SAID:

I forgot how to breath and my cat attacked my brother

INTO JAPANESE

息をするのを忘れて、猫が弟を襲った

BACK INTO ENGLISH

Forgetting to breathe, the cat attacked my brother

INTO JAPANESE

猫は息をするのを忘れて弟を襲った

BACK INTO ENGLISH

The cat forgot to breathe and attacked his brother

INTO JAPANESE

猫は息をするのを忘れて弟を襲った

BACK INTO ENGLISH

The cat forgot to breathe and attacked his brother