A beautifully-illustrated article on the BBC Earth website describes Sheila Patek's research on super-fast motion in the animal kingdom.  She has produced several unexpected findings.  For example, one would think that warm-blooded animals have an advantage over cold-blooded fish, reptiles and such.  Instead the cold-blooded ones launch the highest speed attacks.  Because they are slow-moving, they expend a large amount of energy to "prime" their weapons, so that when prey comes within reach they can release their attack with blinding speed.  Which animal now holds the record for the fastest acceleration?  You'll have to read the article to find out.