DS only crawled for two weeks and only to get to the couch to pull himself up, then he was walking at 8.5 months. He was talking in 3-4 word sentences at 17 months. At 4 he never shuts up. He has no issues with reading, although he does write from right to left.

DD didn't crawl at all. At nearly 2.5 her speaking is pretty normal, 5-6 word sentences.