Long ton, also known as the imperial ton or weight ton, is the name for the unit called the  ton  in the avoirdupois or Imperial system of measurements standardised in the thirteenth century that is used in the United Kingdom and several other Commonwealth countries alongside the French metrication invented in 1799.
Animals of the bear family (including seven existing species of bears and one species of giant panda) usually have very low cub to mother weight ratio. This ratio of giant pandas is at the lowest 1:1,000 to 1:1,500. The newborn's weight only about 150g (0.33 pounds), which is approximately one thousandth of their mothers' weight. One month after birth, they will weigh 2kg (4.4 pounds), then reach 5-6kg two months later.
The average weight of a baby born full term (i.e. between 37 and 41 weeks) is 3.2 kg. An average Indian baby weighs approximately 2.8 kg. At full term, an average baby is 51 cm long and will weigh anywhere between 2.7 to 4 kg. Babyâs Birth Weight is the body weight of a baby at the time of its birth. It is the only area where parents wish that their children are average. A low birth weight, and parents worry that their children are born ill; A high birth weight, and parents worry that their children may be prone to obesity.