A sketch done by Donryu of a ninja squirrel! That really would be an odd sight. You're minding your own business you hear something crashing through the trees and then wham a squirrel appears in front of you. At first you might think it's someone's pet. But when that sword comes out you may realize all to late that you'd better watch your nuts! Oddly enough a ninja squirrel is also trained mohel.

Donryu can be found here: