This is Luvgun, from a mochimochiland pattern. The pattern will be available soon - I was a lucky test knitter. You can check out the talented designer's other work at her web site, and these Flickr pages, here (I especially love her mouse and snake!), and here.

How cute! I never thought of that. The designer puts little eyes on all the patterns, so the barrel is supposed to be the snout/nose, but I couldn't see that until you mentioned that it looks like a dog.