Top 6 Animals with longest pregnancy periods:
While human females carry a child for nine months, some animal species have pregnancies that last years.
Female frilled sharks, a deep-water species founds arounds the world remains pregnant for 3.5 years.
Founds in Europe primarily, alpine salamander and their pregnancies last between two to four years.
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.
A killer whale's pregnancy lasts between 15 to 18 months. Orcas ae highly social animals who looks after the calf together as family.
These giants creatures have pregnancies that last around 15 months. Female giraffes spend the majority of their adult life pregnant.
Emperor scorpion are pregnant for 7-9 months while African species called Opisthacanthus asper is reportedly pregnant for 18 months.