They'll gain about 2 1/2 inches and 4 pounds this year ... It's true that if your 2-year-old is not meeting the milestones listed above, there's a chance they're experiencing a developmental ...

and objects Say a sentence with two to four words Follow simple Instructions Repeat words overheard in a conversation Your 2-year-old will probably be putting longer sentences together (like ...

Everything you need to know about 13-year-old milestones—from physical and cognitive developments to emotional and social development. Medically reviewed by Bree Lustre, MD Medically reviewed by ...