An electric eel is not a true eel. It is more closely related to the catfish family than anything else. An electric eel is capable of zapping up to 650 volts, enough to kill a caiman should one prey on them. Below is a video that shows an electric eel doing exactly that.
(Warning: Don't watch this video if you're squeamish!)
Once upon a time, giant 100 pound salmon, known as "June hogs", would swim 1,200 miles up the Columbia River from the Pacific Ocean, thru western states of the US and into Canada. Dam development in the last century led to their demise though.
A flea can jump up to as high as 220 times the height of its own body length. Therefore, if a flea was the size of a human, could it jump over the Empire State Building in New York City? According to Dr. Gregory Sutton of the University of Bristol, it could not. Here's why:
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