- babies lose weight after birth, usually regaining their original birthweight within a week or two
- babies sleep about 18 hours each day
- babies have four times as much REM sleep as adults
- babies are born without kneecaps
- babies are born with 300 bones, but by adulthood will have only 206
- a week-old baby consumes about 20% of its bodyweight in milk every day!
And now some babyphotos: