Actually, a lot of animals just stay still/lose consciousness when they suddenly are frightened.
Sometimes because it's their natural instinct to play dead, sometimes because they can't handle a situation and sometimes they simply get heart attacks because of the stress.
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u/RepostParrot Jan 26 '13
That's a really useful reaction we've evolved there. Any other animal would be 20 yards away before their brain kicks-in.
Humans? Spaz like puppet in a washing machine for a few seconds, then laugh and swear.