I took this image and blew it up on a copy machine then carved everything in white and ended up with this:
I just found this one which would probably be cooler though
Just print it in black and white and carve the lighter areas.
If you want to make one specifically of your dog meonapumpkin.com has really good software. I'd offer to make a pattern for you but I don't think I could get around to it before Halloween.
