YOU SAID:

my dog eats his farts

INTO JAPANESE

私の犬は彼のオナラを食べます

BACK INTO ENGLISH

My dog eats his fart.

INTO JAPANESE

私の犬はおならを食べます。

BACK INTO ENGLISH

My dog eats the fart.

INTO JAPANESE

私の犬は、おならを食べる。

BACK INTO ENGLISH

My dog eats the fart.