Pastinaca

The Pastinaca was a creature from medieval belief. They look like weasels but are the size of elephants. They smell so terrible that they kill trees just by being near them.

Citations:

Cawson, Frank. The Monsters in the Mind: The Face of Evil in Myth, Literature and Contemporary Life. United Kingdom, Book Guild, 1995.

Gilmore, David D.. Monsters: Evil Beings, Mythical Beasts, and All Manner of Imaginary Terrors. United States, University of Pennsylvania Press, Incorporated, 2012.