Top 10 Animals Longest Gestation Period

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When you talk about gestation, you probably think of humans first, right? Usually we spend 9 months in our mother’s womb until we are ready to face the world. But there are several animals on the planet that go through similar processes, and the gestation period of each species depends on its own factors – although in general, large animals take more time, while small animals take less time. This list brings the 10 animals longest gestation period found:

10. California Sea Lion – 350 days

California Sea Lion  Top 10 Animals Longest Gestation Period
These animals are known for breeding between May and August and give birth in June or July, meaning that this sea lion lineage has an average gestation period of 350 days.
This includes the possible delayed implantation of the fertilized egg for up to 3 months, and the California sea lion is tenth in this selection of the 10 animals with the longest gestation periods.

9. Camel – 360 to 420 days

Camel Top 10 Animals Longest Gestation Period
The gestation period of a camel may range from 360 to 420 days and the mean birth weight of the newborn can vary from 35 to 40 kg. Other camelids, such as llamas also have long gestations around 330 days.

8. Zebra – 361 to 390 days

Zebra Top 10 Animals Longest Gestation Period
Zebras can become pregnant for 361 to 390 days, although this may vary according to lineage.Some species such as the Grevy’s zebra may have a gestation period lasting 438 days.

7. Donkey – 365 days

 Donkey Top 10 Animals Longest Gestation Period
The gestation period for a female is usually 365 days, however this can sometimes vary between 11 to 14 months. It often gives birth to a single puppy and only a small percentage of donkey gestations results in twins.

6. Giraffe – 420 to 460 days


A mother is known to give birth on foot and the newborn is already 1.8 meters tall, so it is no surprise that pregnancy for giraffes can last up to 420-460 days. Giraffes usually give birth to a single puppy, but on occasion they can give birth to twins.

5. Black Rhinoceros – 450 days

Black Rhinoceros Top 10 Animals Longest Gestation Period
It is common for the black rhinoceros to become sexually mature and have the first cub by the age of 4 years and become pregnant for up to 450 days. During this time, the pregnant woman will find herself alone in a sheltered place to give birth in peace.

4. Walrus – 456 days

Walrus Top 10 Animals Longest Gestation Period
A female walrus begins to ovulate between the ages of 4 to 6 years and the gestation for these bulky creatures can last 456 days. The first 4 months of the fetus are spent in suspended development before it is implanted in the uterus.
This delayed deployment has been evolved to optimize mating and birth season and can help promote the survival of the newborn.

3. Sperm Whale – 590 days

Sperm Whale Top 10 Animals Longest Gestation Period
Sperm whale is the largest whale with teeth, so it is no surprise that they have a prolonged gestation period of up to 590 days. Female sperm whales become fertile at the age of 9 years and this can take them up to 16 months to produce a single chick, and sperm whale is third position in this selection of the 10 animals with the longest gestation periods.

2. Asian Elephant – 617 days

Asian Elephant Top 10 Animals Longest Gestation Period
By colossal size, the Asian elephant has a gestation period that lasts for as long as 617 days and usually only gives birth to a cub, occasionally it can give birth to twins.
After 19 months, the puppy is fully developed but remains in the womb for a prolonged period of time to grow and then can reach its mother to nourish, the Asian elephant being second in this selection of the 10 animals with the periods gestation.

1. African Elephant – 645 days

African Elephant Top 10 Animals Longest Gestation Period
Quite like its Asian cousin, the African elephant also resists excessively to long pregnancies, and in fact, they appear in leading position in this selection, of the 10 animals with the longest gestation periods, with the incredible period of 645 days.
The male of one of the species of Loxodonta, elephant-of-savannah, reaches on average 3.3 m in height to shoulders, and reaches the weight of 5.5 tons, which determines not only the largest mammal, but the largest terrestrial animal that there is.
Compared with elephants of the elephas genus, they are distinguished by larger ears, an adaptation in relation to higher temperatures, and by the presence of ivory tusks in females, presenting around 70 kg each.

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