Longest gestation period (amphibian)

Longest gestation period (amphibian)
Who
Alpine salamander, Salamandra atra
What
37-38 months year(s)
Where
Switzerland
When
N/A

The longest gestation period not just for an amphibian but for any terrestrial vertebrate is an average 37-38 months, as exhibited by the alpine salamander (Salamandra atra), native to the Swiss Alps. Occasionally at higher elevations, this may creep up to four years (1,700 m+) or even five years (2,500 m+), making this species a contender for the longest gestation of any animal.

This is at least a year longer than that of the Asian elephant (Elephas maximus), for which the maximum gestation period on record is 25 months (the longest documented for any mammal).