YOU SAID:
luna is a big rat and she likes to eat fur
INTO JAPANESE
ルナは大きなネズミで、毛皮を食べるのが好きです
BACK INTO ENGLISH
Luna is a big mouse and likes to eat fur
INTO JAPANESE
ルナは大きなねずみで、毛皮を食べるのが好きです
BACK INTO ENGLISH
Luna is a big mouse and likes to eat fur
That didn't even make that much sense in English.