Generally speaking, the larger the animal, the longer the gestation period. A baby must grow from two cells to many billions before it is sufficiently developed to live on its owe. That takes quite a while.
The hormones and glands in the woman's body determine the amount of time for pregnancy.
The 9-month period ensures, with a safety factor, that the fetus will have enough time to grow and mature enough to breathe and live outside the mother's body.
because the baby takes time to form into a human baby
so it can grow
20 days
Limousin are selected to have long gestation periods, which is around 290 to 300 days (or more) in length.
a fish lays eggs so it doesn't have a gestation period
How long is the embryonic period in humans?
The Goonch is an enormous catfish in African/Indian waters,it's gestation period is unknown so far,to learn more,search "Goonch" or "Giant Devil Catfish" to learn more
Fairies don't give birth, so they don't have gestation periods.
Probably because they have no gestation period. Although their eggs have an incubation period.
Cassowaries are birds, so they do not have a gestation period, as gestation refers to the length of a pregnancy. Cassowary eggs take between 50 and 60 days to incubate, or hatch.
The period between fertilization and birth is called pregnancy or the gestation period. For humans, gestation lasts about nine months. and isn't it cute. SO ADORABLE
Crabeater Seals only give birth to one seal at a time, and gestation period is so long they only give birth every other year. The gestation period averages over 250 days.
The period between fertilization and birth is called pregnancy or the gestation period. For humans, gestation lasts about nine months. and isn't it cute. SO ADORABLE
They do not gestate so there is no 'gestation period' Japanese fighting fish (Betta splendens) are bubble nest builders and lay eggs which are tended by the male in the nest until they (hatch).