YOU SAID:
Tomorrow is Sunday and I want to pet my cat.
INTO JAPANESE
明日は日曜日で、私は猫を飼いたいです。
BACK INTO ENGLISH
Tomorrow is Sunday, I want to keep a cat.
INTO JAPANESE
明日は日曜日、私は猫を飼いたい。
BACK INTO ENGLISH
Tomorrow is Sunday, I want to keep a cat.
That didn't even make that much sense in English.