YOU SAID:
i love my cat and its not a big cat
INTO JAPANESE
私は私の猫が大好きで、大きな猫ではありません
BACK INTO ENGLISH
I love my cat, not a big cat
INTO JAPANESE
私は大きな猫ではなく、私の猫が大好きです
BACK INTO ENGLISH
I love my cat, not a big cat
You've done this before, haven't you.