How do animals have so quick reaction time compared to human?

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I’ve seen so many videos where animals have(seemingly) instant reaction time and can escape fast from predators, how is it possible and why humans don’t have same reaction time?

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Anonymous 0 Comments

1. Humans have great reaction times when we’ve trained for something. A video gamer can have absolutely unreal reaction times because they’re practiced. Same applies to for example elite soldiers, in scenarios they’ve trained for.
2. In a lot of cases though animals have physical adaptions for specific problems. So when a fly detects an incoming object there is no thought involved as it activates specialized bodyparts designed to launch it into flight as quickly as possible. Or for example a Mantis shrimp, which gives up visual acuity for faster reaction times (well, fast reaction times and being dumb as bricks because brainpower uses up a lot of energy). Mantis shrimp have 12 colour receptors when humans only have 3, but while humans can see thousands of colours a mantis shrimp can see…12. Because to maximize reaction times they don’t do anything with those 12 inputs, just pure Input->Output.

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