YOU SAID:
cats dont have buts.but i do
INTO JAPANESE
猫は持っていませんが、私は持っています
BACK INTO ENGLISH
I don't have a cat, but I do
INTO JAPANESE
私は猫を飼っていませんが、飼っています
BACK INTO ENGLISH
I don't have a cat, but I do
That didn't even make that much sense in English.