Our little man will be 18 mos (15 mos. adjusted) next Sunday and he still cannot walk or talk. He only recently learned to sit up at around 15 mos. actual and he can hold his own bottle. He gets around by crawling (very fast) and he can go up and down the stairs. He pulls up to a standing position very easily, but still wobbles. He has only recently started to lunge himself at us from a standing position, but has not taken that first step. If we try to help him walk, he usually drops to his knees. He started daycare this week (ages 18 mos to 2.5 years) and we're hoping he'll watch and learn from the other kids. Obviously, they are all walking (and running). It is clear that he is developmentally behind, but he is, by far, the youngest in the class, 4 mos. (adjusted) younger than the next child. He cannot drink from a sippy cup yet, but he knows how to use a straw. Stay positive!