How old is the oldest son, and was there any reason for his delay of walking? My son is 17 months old and just now takes a couple of steps on his own. He feels more comfortable when he has his “Stride to ride lion” but not by himself. He also finally crawled a week before his 1st birthday and prior to that, the pediatrician had us go to the hospital for X-rays to make sure his hips were alright. Just wondering what you were going through with this and if it’s anything to be concerned about? Thanks!