" The Fangs gathered at the bottom of the bank and ordered the trolls back. The Fangs seemed worried that the children might somehow get pushed over the falls in the fight if they advanced too quickly, so they proceeded with caution. More Fangs appeared, and they organized themselves into ranks. Meanwhile, the trolls knelt like children at the river’s edge and ran their fingers through the speeding water. When daggerfish leapt, the giggling trolls batted them out into the rapids. "

― Andrew Peterson , North! or Be Eaten (The Wingfeather Saga, #2)