YOU SAID:

He had had a dog that had had it with being a dog and became a frog.

INTO JAPANESE

彼は犬であることでそれを持っていた犬を持っていたし、カエルになった。

BACK INTO ENGLISH

He had a dog that had it in being a dog and became a frog.

INTO JAPANESE

彼は犬であることを持っていた犬を飼っていて、カエルになりました。

BACK INTO ENGLISH

He had a dog that had to be a dog and became a frog.

INTO JAPANESE

彼は犬でなければならなかった犬を飼っていて、カエルになりました。

BACK INTO ENGLISH

He had a dog that had to be a dog and became a frog.