Two recently-arrived Mangshan pit vipers, one of the world’s rarest and most colorful species of snake, are just a subway ride away in the Bronx. The new hatchlings were born this past Aug. 7 at ...

There are between 300 and 500 Mangshan pit vipers in the wild, and the species was included on the International Union for Conservation of Nature's Red List of Threatened Species in 1996. Their ...