Scaly, slithery, and sometimes deadly, snakes are found in underbrush and other wooded areas in Western Pennsylvania.\nWhile you should be cautious of all snakes, there are three\u00a0venomous snakes in particular that you should be on the lookout for when you\u2019re enjoying the outdoors.\nIf you plan to spend a lot of times outdoors it is important you are able to recognize each of the snakes, as well as what to do if\u00a0you are bitten.\nRELATED:\u00a0How to Care\u00a0for a Venomous Snake Bite Wound\nCopperheads\nOne of Pennsylvania\u2019s most aggressive breeds, Copperhead snakes are the cause of thousands of rarely-fatal bites a year. Newborns\u2019 fangs are as venomous as adult fangs and full-grown snakes range between two to three feet in length. Copperheads prey on small birds and snakes, lizards, amphibians, and insects. They are usually found in forests anywhere between New England and the Southwest.\nDistinguishing Characteristics of Copperhead Snakes:\n\nBroad head\nDistinctive neck which can flatten, akin to that of a cobra\nUsually light brown or tan\nDark, triangular banding that fades from dark to light pigment\n\nCopperhead snakes have a distinctive broad neck and head.\nRELATED:\u00a0Snake Bite First Aid: What to Do If You\u2019re Bitten\nTimber Rattlesnakes\nThe largest of Pennsylvania\u2019s venomous snakes, Timber Rattlesnakes can be found in forests throughout the eastern United States. Timbers prey on small mammals, birds, and amphibians. Their venom can be fatal to humans if left untreated, so their bites require immediate medical attention.\nDistinguishing Characteristics of Timber Rattlesnakes:\n\nBroad, flat, and triangular heads\nVertically slit pupils\nThree to four feet long\nSkin pattern alternates between light (yellow or gray) and dark (brown or black)\nV-shaped bands that blend in with the forest floor\nSolid black tails topped with a brown or yellow rattle\n\nTimber rattlesnakes are the largest venomous snake in Pennsylvania.\nMassasauga Rattlesnakes\nSmall and venomous, Massasauga Rattlesnakes have declined so much in population that they are on the path to becoming extinct if work is not done to conserve them. They usually inhabit wet prairies, marshes, and lakes. They rarely bite unless threatened and do contain fairly toxic venom, so listen for the rattle and keep your distance to avoid an incident.\nDistinguishing Characteristics of Massasauga Rattlesnakes:\n\nThick bodies\nGrey or brown skin with a blotch pattern\nHeart-shaped heads with a white stripe\nVertical pupils\nTails marked with brown rings and a gray-yellow, horned rattle\nTypically grow to be two feet long\n\nMassasauga rattlesnakes are on the verge of extinction.\nRELATED:\u00a0Hiking Safety Steps to Keep on Trail\nDo You Know the Difference Between Venomous and Poisonous Animals?\nMany people use these two terms interchangeably, but incorrectly. Although both venomous and poisonous animals are dangerous to humans, the toxin produced is delivered differently.\nVenomous animals, such as copperhead snakes, inject toxin into humans. On the other hand, poisonous animals, such as poison dart frogs, are harmful when eaten or touched because their entire body, or part of it is poisonous.