The precedent on an issue is the collective body of judicially announced principles that a court should consider when interpreting the law. When a precedent establishes an important legal principle, or represents new or changed law on a particular issue, that precedent is often known as a landmark decision.he other type of precedent is case law. In common law systems this type of precedent is granted more or less weight in the deliberations of a court according to a number of factors.
An elephant pregnancy lasts for 21 - 22 months, the longest in the animal kingdom. Thong Deeâs gestation was 646 days, Porntipâs gestation was 651 days and Pak Boonâs gestation period was 658 days. The average/median gestation period for recorded elephant pregnancies is 659 days.
The mystery of the elephant's long pregnancy has been unravelled by scientists. A quirk of biology allows the unborn calf to develop in the womb for almost two years, giving it the brain power it needs to survive from birth. The research, detailed in Proceedings of the Royal Society B, will help elephant breeding programmes in zoos.