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This is a collection of lists of mammal gestation period estimated by experts in their fields. The mammals included are only viviparous (marsupials and placentals) as some mammals, which are monotremes (including platypuses and echidnas) lay their eggs. A marsupial has a short gestation period, typically shorter than placental.
The gestation period lasts for seven months. Hinds (does) give birth to a single fawn, weighing 4.5 to 7 kg (10 to 15 lb), which is nursed for up to ten months. [16] The mother hides her fawn in thick undergrowth immediately after giving birth, and the fawn stays very quiet and still while it waits until the mother returns to nurse it.
After a gestation about 11 months, the female gives birth to a single fawn, which is nursed for about ten months. The fawn becomes independent at about 12 to 18 months old. Young males form bachelor groups, and the young females search for a sorority to join. This deters intraspecific competition and inbreeding. [citation needed]
Mother European fallow deer and fawn. After a female is impregnated, gestation lasts up to 245 days. Usually one fawn is born; twins are rare. [50] The females can conceive when they are 16 months old, whereas the males can successfully breed at 16 months, but most do not breed until they are 48 months old. [50]
A new fawn in May 2023 takes its first few steps. Using the phases of the moon to predict the rut The moon repeats itself, unfolding its phases exactly the same every 19 years, called the Metonic ...
Smaller species normally have a shorter gestation period than larger animals. [2] For example, a cat's gestation normally takes 58–65 days while an elephant's takes nearly 2 years (21 months). [3] However, growth does not necessarily determine the length of gestation for all species, especially for those with a breeding season. Species that ...
Pronghorns have a gestation period of 7–8 months, which is longer than is typical for North American ungulates. They breed in mid-September, and the doe carries her fawn until late May. The gestation period is around six weeks longer than that of the white-tailed deer. Females usually bear within a few days of each other. [20]
The guanaco has a gestation period of 11.5 months, with birth taking place in the summer months of November and December. Once a chulengo is born, it typically stands within 5 to 76 minutes. [7] After a few weeks, the chulengo begins to graze. At eight months, the chulengo is almost fully weaned. [7]