I came up with the idea from my own drafty door in my craft room. I would just throw a towel down in front of the door. It worked, but i thought why not crochet something.
I have quite a bit of mixed colors yarn, and craft eyes. I was even able to come up with my own pattern for the forked tongue. So here's a few i have available right now. I'm working on more and each one will be different colors/patterns.