Never had rodent problems, but sucked up a red cardinal in my drivers side front bumper opening one day driving through the country...
Saw the little guy coming close while doing about 90 on a back road, but thought he diverted away from the car...
Little be known, after about three days, my garage smelled of death, so I figured I'd check and there he was, smacked flat against the radiator...
Good thing I got to him when I did and no further deterioration had occured......took take a pair of needle nose pliars and carefully removed...came out without any issues.