Instincts are great, except for those unfortunate times when they make an animal go completely haywire, sometimes with disastrous results. Here are eight bizarre glitches that cause animals to do some very strange things — some of them even fatal.
Here are two things you may not know about ducklings. One: they may not be able to fly, but holy heck are they quick on their little webbed feet. Two: the behavior this duck is exhibiting is what's known as "imprinting".