What Your Toddler Learns at 19 Months, 20 Months, and 21 Months

You're past the halfway mark of your little one's second year! Learn why he's testing your patience these days, what's so interesting to him about the mirror, and more using these week-by-week toddler milestones.

by Lexi Walters
Toddler Milestones
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Real-mom dispatches from the Baby Zone
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