About 20 species of snakes inhabit the Pinelands, and several of these populations are quite remarkable.
For example, the Timber Rattlesnake is the only venomous species in the Pinelands and exists here as a disjunct population. Having been extirpated from the immediate environs of the Pinelands, they have managed to survive in about seven reproducing populations scattered through the region. The closest neighboring populations are in far north Jersey. The Northern Pine Snake populations of the Pinelands are also cut off from their own kind. Northern Pine Snakes are not found again until you get all the way down to Virginia and West Virginia. Similarly, the Pinelands hosts the northernmost population of the Corn Snake. The most common snake of the Pinelands may be the Northern Water Snake. Surely the most bizarre snake of the area is the Eastern Hognose, also known as the Puff Adder, since it often spreads its neck, cobra-like, when alarmed.