What animal has the longest gestation period? From salamanders to elephants, here’s how long it can take to make a baby.

It adopts two methods (suckling in the first half of the year, short days in the second) to pause for almost a year and give birth in January ...

In optimal conditions, elephants may reproduce at a rate of 6 percent. Elephants have the longest gestation period of any animal at 22 months, and twinning is rare, though it does happen. Elephants do ...