YOU SAID:

My dog is very angry at me because I looked at him.

INTO JAPANESE

私の犬は私が彼を見たのでとても怒っています。

BACK INTO ENGLISH

My dog is very angry because I saw him.

INTO JAPANESE

私の犬は私が彼に会ったのでとても怒っています。

BACK INTO ENGLISH

My dog is very angry because I saw him.