YOU SAID:
I love my cat because is beatyful
INTO JAPANESE
私は猫が大好きです
BACK INTO ENGLISH
I love cats.
INTO JAPANESE
私は猫が好きだ。
BACK INTO ENGLISH
I like cats.
INTO JAPANESE
猫が好きです。
BACK INTO ENGLISH
I like cats.
That didn't even make that much sense in English.