YOU SAID:
I have a cat who is called tom
INTO JAPANESE
私はトムと呼ばれる猫を飼っています
BACK INTO ENGLISH
I have a cat called Tom
INTO JAPANESE
私はトムという猫を飼っています
BACK INTO ENGLISH
I have a cat named Tom
INTO JAPANESE
私はトムという名前の猫を飼っています
BACK INTO ENGLISH
I have a cat named Tom
You've done this before, haven't you.