My 16.5 month old is not walking, though finally getting close. He never crawled, only scooted. He didn't pull himself to stand until 15 months. Delays all around that we're dealing with proactively of course. The reason for my true frustration is when people say "So how old is DS now? 16 Months? Is he walking? He's probably all over the place" I know people are trying to be nice and make conversation, but it's a constant reminder every time we answer "He's scooting..." that his milestones are delayed. I think a better question when you're trying to make conversation and politely inquire about a little one's progress is "How old is he now? What is he up to lately?" Just my thought as the subject has been on my mind lately.