YOU SAID:
cats cat, dogs dog, mans mortal enemy
INTO JAPANESE
猫の猫、犬の犬、人間の死の敵
BACK INTO ENGLISH
Cat's cat, dog's dog, enemy of human death
INTO JAPANESE
猫の猫、犬の犬、人間の死の敵
BACK INTO ENGLISH
Cat's cat, dog's dog, enemy of human death
That didn't even make that much sense in English.