YOU SAID:
Have you seen the dog
INTO JAPANESE
犬を見たことがありますか
BACK INTO ENGLISH
Have you seen the dog?
INTO JAPANESE
犬を見たことがありますか?
BACK INTO ENGLISH
Have you ever seen a dog?
INTO JAPANESE
犬を見たことがありますか?
BACK INTO ENGLISH
Have you ever seen a dog?
That didn't even make that much sense in English.