YOU SAID:
dogs aren't very good cats
INTO JAPANESE
犬はあまり良くない猫です
BACK INTO ENGLISH
Dog is a bad cat
INTO JAPANESE
犬は悪い猫です
BACK INTO ENGLISH
Dogs are bad cats
INTO JAPANESE
犬は悪い猫です
BACK INTO ENGLISH
Dogs are bad cats
That didn't even make that much sense in English.