When I first saw this, I thought I was in trouble! That's a funky shape. But as I looked at it for a little while, I realized it was two rectangles, each with one rounded corner at opposite angles of each other. Then a little circle with a border for the eye. Writing the code didn't take terribly long, but I could not get this pixel perfect. The diff on CSS battle kept showing a thin line where my creation did not match the original image. I tinkered with it for a long time, but had to settle for less than perfection this time.
Check out my code