YOU SAID:

there was once a mouse who had friends who were also mice they all hated cats

INTO JAPANESE

かつてマウスであった友人がいて、彼らはすべて猫を嫌っていました

BACK INTO ENGLISH

Once a mouse, friends and they all hated cats

INTO JAPANESE

そのままだと全滅してた

BACK INTO ENGLISH

And they all died.

INTO JAPANESE

そのままだと全滅してた

BACK INTO ENGLISH

And they all died.