Learn what baby milestones you can expect from your one-year-old baby in Month 12 of WebMD's Baby Month by Month Guide.

There's a wide range of skills when it comes to sitting, crawling, and standing at this age. It's normal for a 1-year-old not to walk, but some do.

Why it's good for 1-year-olds: Most 1-year-olds are able to find an object you've hidden by their first birthday, and this game can help them master that important cognitive milestone.

A survey of 2,000 parents of babies found that while many of these were expected, 78% agreed that important developmental and emotional milestones can come completely out of the blue.