Which animal has the shortest pregnancy period?

The shortest known gestation is that of the Virginian opossum, about 12 days, and the longest that of the Indian elephant, about 22 months. In the course of evolution the duration of gestation has become adapted to the needs of the species.

What animal is only pregnant for 3 months?

As marsupials, opossums give birth to helpless young which they carry inside their pouch for two to three months.

What is the shortest pregnancy ever?

Baby Saybie was born at a San Diego hospital at 23 weeks gestation in December. Meet “Saybie,” who was born weighing 8.6 ounces, about as much as an apple. ABC News’ Will Ganss has her amazing story of survival and the special bond she shares with her nurses.

What’s the longest animal pregnancy?

The 22-month gestation period of the African elephant is the longest among the land mammals.

Which animal has the longest pregnancy period * 1 point?

The African elephant has the longest gestation period followed by the Asian Elephant & Sperm Whale.

Rank Mammal Days
1 Elephant (African) 645
2 Elephant (Asian) 617
3 Whale (sperm) 480–590
4 Rhinoceros (black) 450
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What animal is born pregnant?

Aphid. Aphids, tiny insects found the world over, are “essentially born pregnant,” says Ed Spevak, curator of invertebrates at the St. Louis Zoo.

What animal stays pregnant for 9 years?

Elephants have the longest gestation period of all mammals. These gentle giants’ pregnancies last for more than a year and a half.

Can a 500g baby survive?

Babies who are 24 weeks or older (or more than 500g) have possibilities of survival, but before that their chances are much lower. Iwona Prusinska and her baby in May, 2019 at Holles Street.

What’s the youngest baby born to survive?

Guinness World Records – The most premature baby to survive is Curtis Zy-Keith Means (U.S.A.) who was born to Michelle Butler on 5 July 2020 at the University of Alabama at Birmingham Hospital in Alabama, U.S.A. at a gestational age of 21 weeks 1 day or 148 days, making him 132 days premature.

What’s the youngest baby born?

An Alabama boy who weighed less than a pound at birth after his mother went into labor at only 21 weeks and one day of gestation has been certified as the world’s most premature baby to survive. Guinness World Records and UAB Hospital announced Wednesday that Curtis Means beat the previous record by one day.

How long are sharks pregnant?

Nursery time

The pups are born after 9-12 months gestation and there can be up to 30 in a litter, although the average is 17. Once delivered, they’re on their own, learning to hunt in the shallows for three years or so, before braving the wider ocean.

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Do elephants get periods?

Menstruation is the shedding of the uterine lining (endometrium). It occurs on a regular basis in uninseminated sexually reproductive-age females of certain mammal species.

Animal estrous cycles.

Species Estrus Cycle
Cattle 0.5 21
Pig 2 21
Horse 5 21
Elephant 4 22

How long does an elephant carry a baby?

Nothing about elephants is small, and their pregnancies are no exception. Before giving birth to a 110-kilogram calf, mothers carry the fetus for 22 months, the longest gestation period of any mammal.