The recent studies show that the longest pregnancy or gestation period is of 3.5 years...yeah quite amazing...According to the the Gunnies world records 2011 the longest pregnancy period is of a common FRILLED SHARK (chlamydoselachus anguineus) of 1279.25 or more days
Scientific Classification:
Kingdom:AnimaliaPhylum:ChordataClass:ChondrichthyesSubclass:ElasmobranchiiOrder:HexanchiformesFamily:ChlamydoselachidaeGenus:ChlamydoselachusSpecies:C. anguineus
The shortest known gestation period is the Virginian opossum, which is 12 days. The longest period belongs to the Indian elephant, which has a gestation period of 22 months.
Two marsupials share the shortest gestation period. The Virginian opossum and the yapok (an unusual, rare water opossum) have a gestation period period of 12-13 days. Several sources cite the Eastern quoll of Australia as also having a gestation period of 12-13 days, but this is incorrect. The Eastern quoll's gestation period is 21 days. The longest known gestation period of any animal is that of the African elephant. Its gestation period averages 660 days but can extend to 760 days.
Elephants have one of the longest gestation period among mammals. They are pregnant for a period of around 22 months. After the 22 month gestation, they giver birth to a calf that is approximately 250 pounds heavy and stands at around 2.5 feet tall
Shortest: American Opossum or Virginian Opossum - 8 days Longest: Asiatic Elephant - 760 days *These are mammals, the longest remains the same but the shortest would be the house fly with a gestation period of 24 hours.
The animal that takes the longest to be born is the African elephant. Their gestation period lasts about 22 months, which is the longest of any land mammal. After this extensive period, typically a single calf is born, although twins can occur on rare occasions. This prolonged gestation allows for the development of the elephant's large size and complex brain.
From what I can tell Elephants are pregnant the longest. They have a gestation period of 22 months. Some people may say that an Alpin Salamander is pregnante for three and a half years but I am unsure about that.
The African elephant holds the record for the longest gestation period among terrestrial mammals, lasting around 22 months.
Yes (among mammals, at least). The gestation period of the African Elephant is over 650 days, longer than any other mammal. The Asian Elephant's gestation period is second longest of mammals, at around 600-650 days.
None, the longest is the Asian elephant after a gestation period of 19 to 22 months.
fetal
The recent studies show that the longest pregnancy or gestation period is of 3.5 years...yeah quite amazing...According to the the Gunnies world records 2011 the longest pregnancy period is of a common FRILLED SHARK (chlamydoselachus anguineus) of 1279.25 or more daysScientific Classification:Kingdom:AnimaliaPhylum:ChordataClass:ChondrichthyesSubclass:ElasmobranchiiOrder:HexanchiformesFamily:ChlamydoselachidaeGenus:ChlamydoselachusSpecies:C. anguineus
The gestation for mice is approximately 19-21 days.