Record Breaking Birth Weight in Twins

An average baby has at birth around 3.2 kg (7 pounds, 1 ounce). The heaviest baby ever was born in the US in 1879: 23 pounds, 12 ounces (10.7 kg), but he died 11 hours after being born, as too much or too little above/below the average value decreases fitness. The heaviest baby also to surviv... [ read more >> ]