YOU SAID:

hello i like cats but not dogs because they are stupid

INTO JAPANESE

こんにちは、私は猫が好きですが、犬は馬鹿だから犬は好きではありません

BACK INTO ENGLISH

Hello, I like cats, dogs dog does not like because it is a fool

INTO JAPANESE

こんにちは、私は猫が好きです、犬は馬鹿ですので犬は好きではありません

BACK INTO ENGLISH

Hello, I like cats, dogs dog does not like because it is a fool