Why ground squirrels go ninja over nothing
Rodents recently spooked by snakes wave their tails as wariness signal
SECRET NINJA A California ground squirrel is much more capable than it looks when it comes to battling rattlesnakes that lurk to feast on baby-squirrel nuggets.
das_miller/Flickr, (CC BY-NC-SA 2.0)
Whole scientific careers have gone into understanding why a harmless handful of fluff like a California ground squirrel taunts rattlesnakes.