re penguins, I blame all those cartoons of polar bears and penguins on the same iceberg and so forth. For some reason none of the penguin species ever made the move across the equator, and several misguided attempts to introduce them to arctic shores have failed - too many predators.
Later: just found this manip which may illustrate the point
[img]
http://pics.livejournal.com/smwance/pic/001pcrcc/s640x480[/img]
