Many years ago I saw a documentary on PBS. Something about stress in animals, including, supposedly, humans. Anyway, as they were interviewing some human, a sign on one of the cages in the background read, "RAT HAS NO CONTROL." I have almost never stopped laughing about the beautiful truth of those four words of homemade bumper sticker. This is the answer to the majority of the world's questions.
To be fair, there must have been another cage back there that had a sign reading, "RAT HAS CONTROL." This was the point of the experiment, to show that rats with some control (and predictability of circumstances, as I recall) were much more able to handle rat stress induced upon them by humans. Anyway, great show, and one I've remembered for a long time, eh?
This site mentions the experiment (check out the base url!):
, New Jersey
40° 20' 55.3848" N, 74° 39' 32.5692" W