A baby tiger takes about 3 to 3 and 1/2 months to develop.
A baby will take about nine months to develop inside a woman.
i think,9 months.
about 650 days
It depends on the creature in question.
22 months.
36 -40 weeks
Humans need about 9 months to develop before being born
A pregnancy is 9 months for humans.
A cow's gestation period is about nine months (279 days long).
The gestation period of mice is around 20 days.
The gestation period of mice is around 20 days.
Baby rats first open their eyes at two weeks.