YOU SAID:
my dog has bad breath because he has a cavity
INTO JAPANESE
私の犬は虫歯があるので口臭がする
BACK INTO ENGLISH
My dog has bad teeth so bad breath
INTO JAPANESE
私の犬は歯がとても悪い
BACK INTO ENGLISH
My dog has very bad teeth
INTO JAPANESE
私の犬は歯がとても悪い
BACK INTO ENGLISH
My dog has very bad teeth
You should move to Japan!