YOU SAID:

the mouse uses the cat to speak

INTO JAPANESE

マウスを使って話す猫

BACK INTO ENGLISH

Cat speaking with mouse

INTO JAPANESE

マウスと言えば猫

BACK INTO ENGLISH

Speaking of mouse, cat

INTO JAPANESE

そう言えば...

BACK INTO ENGLISH

"[そういえば] /(exp) (uk) which reminds me .../come to think of it .../now that you mention it .../on that subject .../on that subject ...

INTO JAPANESE

そう言えば

BACK INTO ENGLISH

"[そういえば] /(exp) (uk) which reminds me .../come to think of it .../now that you mention it .../on that subject .../on that subject ...