I am completely awed every time I watch Discoveries Planet Earth. It amazes me that all of this stuff goes on without us even thinking about it. I really liked the fish from africa who's kids live in it's mouth. I couldn't find a photo of that so I'm posting the red bellied piranah instead. I don't think they house their offspring in their jaws though.
I also really want to see some otters in the Grand Canyon. Anyone down for a hiking trip?