YOU SAID:
My car is my cat and my cat is my dog and my dog is my car
INTO JAPANESE
私の車は私の猫であり、私の猫は私の犬であり、私の犬は私の車です
BACK INTO ENGLISH
my car is my cat my cat is my dog my dog is my car
INTO JAPANESE
私の車は私の猫です 私の猫は私の犬です 私の犬は私の車です
BACK INTO ENGLISH
my car is my cat my cat is my dog my dog is my car
You've done this before, haven't you.