YOU SAID:
My dog barks at the mailman
INTO JAPANESE
私の犬は郵便配達人にほえる
BACK INTO ENGLISH
My dog is barking to the Mailman
INTO JAPANESE
私の犬は郵便配達に吠える
BACK INTO ENGLISH
My dog is barking at the Mailman
INTO JAPANESE
私の犬は郵便配達に吠える
BACK INTO ENGLISH
My dog is barking at the Mailman
That didn't even make that much sense in English.