Opossum
Pigs have a gestation period of 114 days.
The length of the gestation period of a penguin varies depending on the species. Generally, it ranges from about 1 to 2 months.
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The length of gestation is determined by factors such as the species involved, genetics, and environmental conditions. Biological factors like hormone levels, development of the fetus, and size of the species also play a role in determining the duration of gestation. Ultimately, different species have evolved to have specific gestation periods that are optimal for the healthy development of their offspring.
The average length of human gestation is 280 days, or 40 weeks.
Opossum
Measured from first day of the woman's last menstrual period, the average length of human gestation is 280 days, or 40 weeks. I assume it will be the same in America!
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.
Opossum
Gestation, or a gestation period.
Gestation time is the length of time that it takes from fertilization to birth.
Most often used in animal pregnancy. It's the length of time before an animal or human is born. A sentence might say "190 day gestation."
Marsupials in general have short gestation periods since the babies are born into the pouch at a rather underdeveloped state. I think the shortest animal gestation period if I remember correctly is that of the opposum, it's 12-13 days long.
Human gestation is approximately 40 weeks.
This is the length of time that an animal is pregnant for.
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.