YOU SAID:

The cat is black and i like black cats

INTO JAPANESE

猫は黒くて、私は黒猫が好きです

BACK INTO ENGLISH

Cats are black and i like black cats

INTO JAPANESE

猫は黒で、私は黒猫が好きです

BACK INTO ENGLISH

Cats are black, i like black cats

INTO JAPANESE

猫は黒いです、私は黒い猫が好きです

BACK INTO ENGLISH

Cats are black, i like black cats