YOU SAID:
my only friend at the party is the dog
INTO JAPANESE
パーティーで私の唯一の友達は犬です
BACK INTO ENGLISH
My only friend at the party is a dog
INTO JAPANESE
パーティーで私の唯一の友達は犬です
BACK INTO ENGLISH
My only friend at the party is a dog
That didn't even make that much sense in English.