My son is 11 1/2 months and he didn't start really crawling at about 10 months or so. He would "army crawl" but he wouldn't pick his belly up off the floor. Then one day he just started to crawl...like really crawl. As for the teeth, he's had 8 (4 top and 4 bottom) since he was about 8 months, so that I'm not sure about. And consider yourself blessed that you could go 10 months without teething! But, I wouldn't worry about it yet. Babies develop at different speeds. My son doesn't talk yet. Not at all. Not a single word. And he will not take a sippy cup, but I'm not worrying about it. (Too much!) Chances are, your child is a late developer, but where it takes an early developer 2 weeks to master something, yours will get the hang of it in a few days. And watch out for when those teeth come in, cause more than likely they are all gonna come in at the same time. Stock up on Oragel!!
at 9:34 AM on Nov. 24, 2009