Laaks are small, green-skinned, poisonous reptiles that attack larger prey in small groups. They can leap with surprising speed and strength. Found almost everywhere, from desolate wastelands to ancient ruins to the back alleys of large cities, laaks are a scourge. However, they avoid cold regions.
Because they are immune to all known venoms, their blood is useful in various antitoxins.
They are a staple of livelihood for the people of Treetops, hunted for both food and pelt (for leather).
For additional information, see Numenera core book pg 243