YOU SAID:

I ain't never ever seen somebody who doesn't even like cows and cats

INTO JAPANESE

私は牛や猫さえ好きではない人を見たことがない

BACK INTO ENGLISH

I've never seen anything who doesn't even like cows and cats.

INTO JAPANESE

私は牛や猫が好きではないものを見たことがありません。

BACK INTO ENGLISH

I've never seen anything that cows and cats don't like.

INTO JAPANESE

私は牛や猫が好きではないものを見たことがありません。

BACK INTO ENGLISH

I've never seen anything that cows and cats don't like.