One year old. It is impossibly fast and also if you have had a rough sleeper somehow also the longest year of your life simultaneously. At 12 months most babies are pulling to stand confidently and many are cruising along furniture, some are taking first independent steps though the normal range for walking extends to 18 months so no panic if not yet. Fine motor skills include neat pincer grasp picking up small objects with thumb and forefinger, banging objects together deliberately, putting objects into containers, and beginning to use a spoon with a lot of mess. Language at 12 months typically includes 1 to 3 words with clear meaning. Mama, dada, baba, no, hi are common first words. But receptive language is way ahead: your 1 year old understands far more than they can say. They follow simple instructions, respond to their name consistently, and understand no. Socially your 1 year old shows clear preferences for familiar people, plays peekaboo and pat-a-cake, imitates actions, and may show separation anxiety when you leave which is completely developmentally healthy. Talk to your pediatrician if your 1 year old is not pulling to stand, has no words and is not gesturing or pointing, does not respond to their name, or has lost skills they previously had.