African elephants have the longest gestation periods, at around 22 months.
The gestational period for a mammal varies. Smaller mammals tend to have a shorter gestational period than larger mammals.
The Bowhead whale is the longest living mammal.
The gestational period is defined as the period of time from conception to parturition. The average gestational age for humans is 38 weeks.
Every mammal is different. A dog is nine weeks, a cat, sixty to sixty-nine days, a dolphin, twelve to eighteen months. The African Bush Elephant has the longest gestation period among mammals at about 22 months. Some opossums have gestation periods of less than two weeks.
Narwhal.
The gestation period for elephants is around 22 months, making it the longest gestation period of any mammal.
5 days
The period of time a mammal is pregnant (gestation period) ranges depending on the species. The species of mammal with the longest gestation period is the Asiatic Elephant with a maximum gestation period of 760 days. The shortest of American Opossum with a minimum of 8 days.
The average length of the pregnancy gestational period in humans is about 40 weeks, or around 9 months.
Hippopotamus have a gestation period of about 8 months.
A Donkey??
175 Days