Urimander

Urimanders are small, mermiform(?)has two arms, and a long tail reptiles, with a pair of bony arms and a long tail. While not particularly fast or powerful, they have an ability to shrink prey (or potential predators) down to mouse-like size. They are effectively the "smallest giant monster" one might have to fight.
== References ==
* Creatures of the Night, Vol. 2, p.16-17