My baby is 15 months old but still afraid to walk on his own. Should I be worried?

It's really unusual for a kid not to be able to walk at that age but sometimes it's just a lay-off from the norm. Maybe your kid is just a late bloomer. However, this can also be a red flag since around 50 percent of babies start to walk as early as 9 months. Wait until 18 months, or better yet have him checked.