I used to have ducks, and my favorite/pet one, Chunckzilla, looked just like that. And yes, he did attack me a few times.. tore holes right through my jeans with them claws... Vicious bugga.
BeRsErK! by @Worm (Chris Watson)
Dedicated to anyone who has ever been attacked by a duck.
A joint effort with Tyco Kaine:
Kaine's doodles
He really looks crazed, hehe. ^_^ Its a funny picture and I like it. :)