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
The gestation for mice is approximately 19-21 days.
The gestation period for each animal is different. For example Elephants have a gestation period of 22 months where as polar bears one of only 8 months.
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 cow has the longest gestation period of the two species: A dog is pregnant for around 60 days, whereas a cow is pregnant for around 285 days.
The puma's gestation period is 91 days long.
The puma's gestation period is 91 days long.
In humans 9 months. Other animals have different gestation periods. Gestation is the period of time that the fetus spends growing inside its mother's uterus. The gestation period for humans is approximately 40 weeks long.
The gestation period of the Springbok is 24 weeks.
The gestation period of a raccoon is 63 days.
Horses have a gestation period of 340 days.
because it takes long time for a frilled shark to complete the baby's maturation
It depends on the species. 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. On the other end of the scale, tree kangaroos have the longest gestation period, being 39-45 days. Most other marsupials range between 21 and 33 days.