Gestation in Sperm Whale females lasts about 14 to 16 months. A sigle calf is produced at the end of gestation. Lactation proceeds for 19 to 42 months, but calves may suckle up to 13 years. Calves can suckle from females other than their mothers. Females generally have birth intervals of three to six years between calf birth.
Gestation for whales varies by species, typically ranging from about 10 to 16 months. For example, sperm whales have a gestation period of around 11 to 13 months, while orcas have a gestation period of about 17 months. The length of gestation is influenced by the size and type of whale, with larger species generally having longer gestation periods.
In general, larger mammals have longer gestation periods. The African Bush Elephant has the longest gestation period at 22 months. Placental mammals have longer gestation periods than marsupials. Some small marsupials have gestation periods of less than two weeks.
Raccoons have a gestation period of 63-65 days.
Gestation ranges from 97 - 181 days, with an average of about 135 days.
Several species of whale have gestation periods of around 18 months.
The gestation period of a lioness is about 110 days.
Influenza has a gestation period of 1-4 days with an average of 2 days.
For a tiger, the gestation period averages around 100 days. For a cow, the gestation period averages around 285 days.
The Okapis gestation period is about 458 days on average
a skunks gestation period is 62-66 days
The gestation period of a raccoon is 63 days.
Horses have a gestation period of 340 days.