Muscaliet
Region of origin: France
Appearing in the translated bestiary of Pierre de Beauvais, the muscaliet is a rodent said to generate an immense amount of body heat. It will build its nest burrowed underneath a tree it gathers fruit from and the heat it gives off as it lives there is enough to dry out and eventually kill the tree.
Originally posted on Tumblr on August 4, 2016
The Compendium of Arcane Beasts and Critters 