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Dr. Brady Barr goes head-to-head with some of the planets most dangerous predators — using cutting-edge technology to film their strikes, analyze them and calculate a “danger zone” for each animal. Brady will compare the strikes of animals such as the rattlesnake, croc, cheetah, the sling-jaw wrasse and the mantis shrimp, and then he'll test his own reaction time to find out if he stands a chance of avoiding the strike of a killer.