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30 Things You Never Knew About Babies... Until You Had One

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17. Teething Is All Over The Map
Around month three, people will start commenting that your little one is "probably teething" if they're acting fussy. Take it with a grain of salt. They may well be... or they just may be fussy. Babies first teeth can come in anytime from around four months to after their first birthday, so keep those expectations in check.