YOU SAID:

my pet cat ate my brothers head

INTO JAPANESE

私のペットの猫を食べた私の兄弟の頭

BACK INTO ENGLISH

Head of my pet cat that ate my brother

INTO JAPANESE

私の兄を食べた私のペットの猫の頭

BACK INTO ENGLISH

I ate my brother's pet cat's head

INTO JAPANESE

私は私の弟のペット猫の頭を食べた

BACK INTO ENGLISH

I ate my little brother's pet cat's head

INTO JAPANESE

私は私の弟のペット猫の頭を食べた

BACK INTO ENGLISH

I ate my little brother's pet cat's head