Crawling vs Army crawling

My little guys is doing it... Crawling properly. Since he has been seeing other kids doing it, he has been crawling like a pro. But I don't think it was just the peer instruction that helped.

You see, we have a small space (it is Japan after all) and hardwood floors. Combine that with winter and always being in socks and warm, fuzzy pants and he could very easily pull himself along. Now that spring has sprung, it is sometimes warm enough to give him some pants off time and because of that, he can't really pull himself along as quickly and has instead been crawling properly.

Perhaps it was the pants all along, or perhaps he just liked moving about like a zombie with an injured leg being dragged behind him...