YOU SAID:

My dog has an infected left ear

INTO JAPANESE

私の犬には感染した左耳があります

BACK INTO ENGLISH

My dog has infected left ear

INTO JAPANESE

私の犬は左耳に感染しています

BACK INTO ENGLISH

My dog has infected the left ear

INTO JAPANESE

私の犬は左耳に感染しています

BACK INTO ENGLISH

My dog has infected the left ear