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The U.S. is home to several species of venomous snake, though none is responsible for more bites than the copperhead. According to the Centers for Disease Control, between 7,000 and 8,000 Americans ...

Gloyd, H. K., Conant, R. 1943. A synopsis of the American forms of Agkistrodon (copperheads and moccasins). 7 (2): 156, Figure 10.

Copperheads (Agkistrodon contortrix) are venmous snakes that inhabit the Eastern and Central United States. Could you pick one out of a lineup of venomous snakes? If the answer is no, then read on to ...

Wild female pit vipers can reproduce without a male, suggesting that virgin births may take place in nature far more than before thought. Asexual reproduction is common among invertebrates — that is, ...