YOU SAID:

My bestie's cat peed on his floor

INTO JAPANESE

私の親友の猫は彼の床におしっこをした

BACK INTO ENGLISH

My best friend's cat peed on his floor

INTO JAPANESE

親友の猫が彼の床におしっこをした

BACK INTO ENGLISH

My best friend's cat pissed on his floor.

INTO JAPANESE

親友の猫が彼の床に小便をした。

BACK INTO ENGLISH

His best friend's cat pissed on his floor.

INTO JAPANESE

彼の親友の猫が彼の床に小便をした。

BACK INTO ENGLISH

His best friend's cat pissed on his floor.