YOU SAID:

if two cats fight one will lose but two won't

INTO JAPANESE

2匹の猫が戦えば1匹は負けるが、2匹は負けない

BACK INTO ENGLISH

If two cats fight, one loses, but two loses.

INTO JAPANESE

2匹の猫が戦うと、1匹は負けますが、2匹は負けます。

BACK INTO ENGLISH

When two cats fight, one loses, but two loses.

INTO JAPANESE

2匹の猫が戦うとき、1匹は負けますが、2匹は負けます。

BACK INTO ENGLISH

When two cats fight, one loses, but two loses.