[The venom of the Heterodon platirhinos (aka Eastern Hognose Snake, Puff Adder, Hissing Adder, Spreading Adder, Blow Viper, Hissing Sand Snake) is non-threatening to humans, but can cause a mild allergic reaction in some. According to the University of Florida "The Hognose Snake is renowned for its 'death feigning' behavior. When threatened, it flattens its head and neck and hisses loudly. It may strike, but only with its mouth closed. If it is further harassed, it will flip on its back and convulse for a short period and may defecate and regurgitate its food. It will then remain motionless with its belly up, mouth open, and tongue hanging out.[...] [Native Floridians] call the banded form of the Hognose Snake a "Puff Adder" and correctly believe it to be harmless. However, the black form of the Hognose Snake is called a "Spreading Adder" and is wrongly believed to be deadly. Another old myth says that the Hognose Snake can mix venom with its breath and is thus able to kill a person from a distance of twenty-five feet. In truth, its breath is harmless."]
Smithsonian Correspondence
United States National Museum
Under the Direction of
The Smithsonian Institution
Washington, May 18, 1883.
Surgeon General Charles H. Crane:
Medical Bureau,
War Department.
Dear Sir:
At the request of Dr. Henry G. Yarrow, Honorary Curator, Department of Reptiles, I have the pleasure to present herewith to the Army Medical Museum a specimen of a blowing viper, Heterodon platyrhinus [Heterodon platirhinos], having certain morbid growths upon different parts of its body. I enclose a copy of a memorandum sent to Dr. Yarrow by Dr. J.C. McConnell, relative to the nature of the pathological structure.
Your very respectfully,
Spencer Baird
Director: U.S. Nat'l Museum
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