YOU SAID:

I went to my dogs birthday party, and we had cake.

INTO JAPANESE

私は犬の誕生日パーティーに行って、ケーキを食べた。

BACK INTO ENGLISH

I went to a dog birthday party and ate a cake.

INTO JAPANESE

私は犬の誕生日パーティーに行ってケーキを食べた。

BACK INTO ENGLISH

I went to the dog's birthday party and had a cake.

INTO JAPANESE

私は犬の誕生日パーティーに行ってケーキを食べた。

BACK INTO ENGLISH

I went to the dog's birthday party and had a cake.