Growth & Development

0-2 Months

Growth

• Birth: 8 lbs., 6 oz., 20 in.
• 6 Days: 8 lbs., 5 oz.
• 11 Days: 8 lbs., 9 oz., 20 in.
• 9 Weeks: 12 lbs., 0 oz. (76th percentile)

Milestones

• Sleeping "through the night" (11:00 PM - 5:00 AM): 6 weeks
• Picking up toys, noticing hands: 8 weeks
• Laughing: 11 weeks

3-6 Months

Growth

• 4 Months: 12 lbs., 15 oz. (75th percentile), 24.5 in. (57th percentile)
• 6 Months: 17 lbs. (69th percentile), 25.5 in. (40th percentile)

Milestones

• Sleeping "through the night" (9:30 PM - 7:00 AM): 3 months
• Rolling over, back-to-belly: 4 months
• Rolling over, belly-to-back: 5 months

7-10 Months

Growth

• 9 Months: 19 lbs., 8 oz. (61st percentile), 26 in.

Milestones

• Army crawling: 7 months
• Sitting unassisted: 7 months
• Crawling: 8 months
• Clapping: 9 months
• Shaking head (no): 9 months
• Pulling to standing position: 10 months

Language

• New Words/Phrases at 7 Months: "mama", "baw-baw" (bottle)
• New Words/Phrases at 9 Months: "dada"
• New Words/Phrases at 10 Months: "hey", "hi"

11-14 Months

Growth

• 12 Months: 21 lbs., 7 oz., 27.5 in.

Milestones

• Nodding: 11 Months
• First tooth: 13 Months

Language

• New Words/Phrases at 11 Months: "baby"
• New Words/Phrases at 11 Months: "Mimi"
• New Words/Phrases at 13 Months: "Mia", "yeah", "yay"

15-18 Months

Milestones

• Walking: 15 Months

Language

• New Words/Phrases at 15 Months: "uh-oh", "no", "eat", "hey"
• New Words/Phrases at 16 Months: "hello"

19-21 Months

Milestones

• Jumping: 18 Months

Language

• New Words/Phrases at 19 Months: "ho ho ho", "ball", "Daddy", "yellow", "huh", "bath", "what's that", "whoa", "fruit"