YOU SAID:

I can't believe you ate the dog's food.

INTO JAPANESE

あなたが犬の餌を食べたなんて信じられない。

BACK INTO ENGLISH

I can't believe you ate dog food.

INTO JAPANESE

あなたがドッグフードを食べたなんて信じられません。

BACK INTO ENGLISH

I can't believe you ate dog food.