Venomous Snakes Of North America:------------------------------------------------------------------<< Back to Venomous Snakes

 

 
Rattlesnakes - Stock Footage 
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Eastern & Western Diamondback Rattlesnakes, Canebrake Rattlesnakes, Pygmy Rattlesnakes and others ...
 
 
Cottonmouth / Water Moccasin - Stock Footage 
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Cottonmouth aka Water Moccasin in and near water ...
 
 
Coral Snakes - Stock Footage 
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Coralsnakes in Florida...
 
 
Copperheads - Stock Footage 
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Copperheads near swamp...
 
 
Exotic Venomous Snakes found in the Everglades - Stock Footage 
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Escaped Cobras, King Cobras and Green Mambas found near Everglades...
 
 
 
 
Venomous snakes include several families of snakes and do not form a single taxonomic group. This has been interpreted to mean that venom in snakes originated more than once as the result of convergent evolution. Evidence has recently been presented for the Toxicofera hypothesis however; venom was present (in small amounts) in the ancestor of all snakes (as well as several lizard families) as 'toxic saliva' and evolved to extremes in those snake families normally classified as venomous by parallel evolution. The Toxicofera hypothesis further implies that 'non venomous' snake lineages have either lost the ability to produce venom (but may still have lingering venom pseudogenes), or actually do produce venom in small quantities, likely sufficient to assist in small prey capture, but cause no harm to humans if bitten.
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