25% of adult weight, grows 400%

Human brain weight increases 3–4 fold between birth and maturity

At birth a baby's brain weighs about 340 grams (about 12 ounces), and it continues to grow quite rapidly during the child's first few years. By her first birthday, her brain has already more than doubled in weight, to about 1,100 grams. Amazingly, by age five, brain weight will have reached about 90 percent of its eventual adult weight of 1,450 grams (almost 3 pounds).

Lol... enough already beans... you got it...

damn beans i think you got it already IoI

edit: nice addition to your banner Hanako

3.5 kg?

At birth, the brain is 25% of adult size, and head circumference averages 35 cm. Head circumference increases an average 1 cm/mo during the 1st yr; growth is more rapid in the 1st 8 mo, and by 12 mo, the brain has completed half its postnatal growth and is 75% of adult size. Head circumference increases 3.5 cm over the next 2 yr; the brain is 80% of adult size by age 3 yr and 90% by age 7 yr.

good, now i dont have to google it

click it for music...

From what fish do we get Caviar?