YOU SAID:
my dog did some dirty things today
INTO JAPANESE
私の犬は今日汚いことをしました
BACK INTO ENGLISH
My dog did dirty today
INTO JAPANESE
私の犬は今日汚れました
BACK INTO ENGLISH
My dog was dirty today
INTO JAPANESE
今日は私の犬が汚れていた
BACK INTO ENGLISH
My dog was dirty today
You've done this before, haven't you.