A type of species found in almost every Zone of The Seven Realms, some regions more, other regions not at all. Found mostly in The Moonglade. They are several sub species of Nips too.
Nips are mobs who will always stay at the same spot. When you are 5 levels higher or lower, they will not attack you anymore.
A summary of all the Nips in the game: Category:Nip.