This is not a mouse, and this is not eve a wild animal, this is a domesticated rat. If his rather large bright white-colored rat was in your bag of spinach you would know about it longer before you served it into a sandwich.
Istock has plenty of pictures of wild mice if you feel the need for a largely irrelevant illustrative picture of mouse that is not actually the mouse in question. Just in case the reader does not know what a wild mouse looks like, which might seem implausible if not for the fact that someone thought Jumbo the Rat fit the bill.
You can see the actual mouse in question here.