We have 2 Savannah Cats, fifth generation, incredibly athletic and very affectionate. When they were young(er) they would sit outside the shower door and call to me or my wife. One time she opened the door about 8 inches and Lucy jumped right in she (Lucy) didn't seem to mind at all. This became a regular occurrence for about 6 months (until we got tired of cleaning up after wet cat). Duncan jumped on the bathtub wall but didn't go all the way in. To this day, Lucy goes out in the rain without hesitation (Duncan has unfortunately gone to the great scratching post in the sky).