YOU SAID:
I like cats but i don't like dogs
INTO JAPANESE
私は猫が好きだが犬は好きではない
BACK INTO ENGLISH
I like cats, but I do not like dogs
INTO JAPANESE
私は猫が好きですが、私は犬が好きではありません
BACK INTO ENGLISH
I like cats, but I do not like dogs
That didn't even make that much sense in English.