Not based on true events

I believe he was angrier than a hornet and more furious than a fiery dragon. And this human fiery dragon had in sight a knight, a knight who was not even seeking to conquer the beast, a knight at whom he could blast his ire. Why, ask you, did he feel ire whatsoever? The answer is as simple as a single-celled animal: he had a prick in his foot and it drove him to the point of overarching insanity. So the knight, who in fact was an Armoured Hero Shrew, was made the victim, and the enraged dragon stamped as best he could with a wounded foot towards it, and all the while the shrew remained as still as a statue, with only its nose snuffing in the dirt about. Finally, it took note of the approaching enemy, but it was too late, the man was upon him, literally. Yes, indeed, his whole flabby foot was on the body of the shrew, yet nothing occurred. The man then stood solely upon that terrible foot but nought more did the creature do but slightly shuffle into a more comfortable position. This was most frustrating indeed for the dragon, for he could not wound the stout knight as he had wished and his rage grew with every pound of weight that he set upon his victim.  And so there they remained for a moment, the shrew showing  no signs of discomfort and the man showing many signs of fuming disquiet. Finally, his annoyance grew adamant, and he cried out in words which, of course, the shrew was unable to understand: “ What’s the matter with you?!!” I am afraid that that proved to be the dragon’s undoing, for as soon as the cry came to the ears of the knight, the shrew gave a squeak of the utmost terror, and burst out from beneath the heavy foot and soon was scurrying out of sight. Meanwhile, the dragon had been thrown flat onto his bottom, and was left there all alone in the deep forest to ponder whether hurting another hurts oneself more. Indeed, in this case, it seemed very much true and he at length arose with a rumble to make his slow limping way home. 

Armoured Hero Shrew
Scutisorex somereni

The Armoured Hero Shrew has a skeletal system unique only to it and another species of Hero Shrew. This uniqueness comes from its spinal column, the vertebrae of which are specially fused, giving it the ability of withstanding great weight, up to 72 kg according to one report. It lives in Africa, more specifically in Uganda, with both plants and invertebrates creating its diet. It catches its prey by careful and well-calculated movements, and is of least concern when it comes to extinction.