Running Doodle: male

I've recently started trying my hand at drawing those weird four limbed creatures that I see everywhere these days. I realize most of the quick doodles I upload of these for the next little while probably belong in scraps more than my gallery, but I want people to see them so that they can provide helpful feedback. I'm sort of blundering around teaching myself, and while I realize that self-taught can produce decent art, I could definitely use a couple of pointers.