It depends on the species, temperature, and feeding but tarantulas generally have gestation periods (insemination to eggs laid) of several months. 3-9 months is typical. After the eggs are laid in an egg sac, it is a matter of weeks (about 2-6) before the young Spiders hatch, undergo a first molt, and are ready to leave the sac and eat on their own. This is also dependant on the species and temperature.
Monkeys have a gestational period of 140-150 days. During ths time, the embryo develops and recieves nutriants from the mother.
The gestational period for a mammal varies. Smaller mammals tend to have a shorter gestational period than larger mammals.
The gestational period is defined as the period of time from conception to parturition. The average gestational age for humans is 38 weeks.
The average length of the pregnancy gestational period in humans is about 40 weeks, or around 9 months.
5 days
Hippopotamus have a gestation period of about 8 months.
A Donkey??
175 Days
16 moons
Sheep have a gestational period (time of pregnancy) of 145 days.
When the female's egg is fertilized.
Five months (150 days)