Crawling Obsession

Ruby wants to crawl. She gets up on her hands and arches herself upward, brings her belly off the floor in a yoga plank pose, and yells. Then she bunches her belly, buries her nose in the rug and creeps herself forward a tiny bit. She can go backward and she can go in a circle but really what she wants is to go forward on command, get every toy available, cover a lot of ground, pull down the curtains, eat the plants, grab the cat's tail. She's pursuing this goal with her usual incredible vigor.