About a week ago, Lou started taking steps here and there. A few days later I took this video, which shows a legitimate Frankenstein walk. A few days after that he was full on walking and trying to run. I would say he is walking about 75% of the time now and only resorts to crawling when he has to get somewhere fast-like chasing the cat. Clearly, he spends about 25% of his time chasing the cat.