... pigs extirpate the rattlesnakes withimpunity?... 
J. Emerson Tennent 「Sketches of the Natural History of Ceylon」
..."Other clues suggest that both Agkistrodon and Trimeresurus (Bothrops) moved from Asia to America, one of these presumably giving rise to the rattlesnakes...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Similar changes of proportions with increase in age occur in copperheads (Fitch, 1960:106) and rattlesnakes (Klauber, 1956:158-159), but the tail of the cottonmouth is relatively much longer...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...This same type of behavior has been reported for copperheads (Fitch, 1960:194) and rattlesnakes (Klauber, 1956:618)...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...The behavior of the snakes during heating resembled those instances described by Klauber (1956:382-387) for rattlesnakes...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...The typical threatening posture of rattlesnakes is all but lacking in the cottonmouth, which relies primarily on concealing coloration or nearness to water for escape...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...This threat display is unique to cottonmouths; although it does not attract as much attention as the display of rattlesnakes, it is probably an effective warning to most intruders at close range...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Likewise, the venom of most species of rattlesnakes would be expected to be more virulent when injected into mammals than when injected into lower vertebrates...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Grade IV (very severe) was added by McCollough and Gennaro (1963:961) to account for many bites of the eastern and western diamondback rattlesnakes...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Two rattlesnakes killed by a cottonmouth...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...The genus Neotoma largely coincides in its over-alldistribution with the genus Crotalus, of the rattlesnakes...
Henry S. Fitch 「Ecological Observations on the Woodrat, Neotoma floridana」
...Even young rattlesnakes toosmall to eat woodrats are potentially dangerous to them, as they maystrike and kill any that come within range...
Henry S. Fitch 「Ecological Observations on the Woodrat, Neotoma floridana」
...Stripedwhipsnakes, rattlesnakes and gopher snakes are known to occur in this vicinity(Douglas, 1966)...
Charles L. Douglas 「Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado」
...The rattlesnakes, genera Sistrurus and Crotalus...
William E. Duellman 「A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico」
...The draining of these marshes probably resulted in reducing thenumbers of these rattlesnakes...
William E. Duellman 「The Amphibians and Reptiles of Michoacán, México」
...The prairie-dog is truly a tenement dweller, and his home is occupiednot only by his own kind, but by owls and rattlesnakes...
Royal Dixon 「The Human Side of Animals」
...On coming to the child, he found her busy at work feeding severalsnakes of the species of rattlesnakes called yellow heads...
Unknown 「Anecdotes of Animals」
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