The delegate from Germany to the Rescue Aid Society speaks a few words of German to Bernard in RES, so the answer is a definite yes. Nearly any carnivore will eat a mouse. Consider that 19th century England was a class-conscious society. We postulate that rats were at that time a lower class than the average mouse, and that sewer rats were considered the lowest of the low, hence, Ratigan's desire to masquerade as a mouse. Certainly, there were many honest and upstanding rats, and in modern times, the stigma has disappeared.
Mice are also on congenial terms with certain non-rodent species.
The relationship between mice and human beings is a complex one. In nearly all cases, a human is a mouse's enemy and will finish off a rodent if he can. Most mice wisely choose to stay as hidden from humans as possible, as we are a very real danger to them. There are numerous examples of which we will name only a few. Cheese is probably every mouse's favorite dish.