YOU SAID:

There was a dog which i saw through the window. He was eating toothpaste

INTO JAPANESE

私が窓から見た犬がいました。彼は歯磨き粉を食べていた

BACK INTO ENGLISH

There was a dog that I saw through the window. he was eating toothpaste

INTO JAPANESE

窓越しに見た犬がいました。彼は歯磨き粉を食べていた

BACK INTO ENGLISH

There was a dog I saw through the window. he was eating toothpaste

INTO JAPANESE

窓から見えた犬がいました。彼は歯磨き粉を食べていた

BACK INTO ENGLISH

There was a dog that I saw through the window. he was eating toothpaste

INTO JAPANESE

窓越しに見た犬がいました。彼は歯磨き粉を食べていた

BACK INTO ENGLISH

There was a dog I saw through the window. he was eating toothpaste

INTO JAPANESE

窓から見えた犬がいました。彼は歯磨き粉を食べていた