DS2 is 12 weeks old and can already roll front to back, and from his back onto either side. If he had been my first child I would be feeling very proud but as he's my 2nd I'm just concerned that all movement stuff (like crawling, walking and escaping from the cot)might come early too!
my 2 rolled early, crawled early. walked but 9month and 10 month.
you may need to grow extra eyes in back of your head.
plus dc1 taught dc2 to do the naughty stuff like climbing early coz she is very mobile. a couple of weeks ago i caught the 2 of them jumping up and down on spare bed!! dc2 is only 11month!!!yesterday it had progressed to jumping off onto pile of cushions [hmmm]
dd1 rolled back to front at 12 weeks, and crawled at 5 months. I think it must have been because she liked being on her tummy, so naturally progressed to pushing up onto hands and knees to crawl. (ds1 and dd2 hated being on their tummies, and crawled from sitting, around 10 months). I was all ready for dd1 being an early walker, but this didn't happen until 12 months. She was SO fast at crawling!