While human females carry a child for nine months, some animal species have pregnancies that last years.
Image: Pexels
Here are 6 animal species that have the longest pregnancies, as per National Geographic.
Image: Pexels
Frilled Shark Female frilled sharks, a deepwater species found around the world remains pregnant for 3.5 years.
Image: X/@egeberkina
Alpine Salamander Found in Europe primarily, alpine salamander and their pregnancies last between two to four years.
Image: Pexels
Elephants The gestation period in Elephants ranges from 18 to 22 months, owing to them being the largest living and biggest-brained land animals in the world
Image: Pexels
Killer Whales A killer whale's pregnancy lasts between 15 to 18 months. Orcas are highly social animals who look after the calf together as family.
Image: Pexels
Giraffe These giant creatures have pregnancies that last around 15 months. Female giraffes spend the majority of their adult life pregnant.
Image: Pexels
Scorpion Emperor scorpions are pregnant for 7-9 months while African species called Opisthacanthus asper is reportedly pregnant for 18 months.