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Common Cantil
Common Cantil (Agkistrodon bilineatus bilineatus)
The Common Cantil is a heavy bodied snake with a broad, triangular head and small eyes with vertical pupils. They are usually brown or black, with darker brown or black banding, sometimes with white or cream colored... Read more >
Ornate Cantil
Ornate Cantil (Agkistrodon bilineatus taylori)
The Ornate Cantil has a heavy body and relatively long tail. The broad triangular head has small eyes with vertical pupils. The body is brown or black and often has distinct tan colored banding, with orange or yellow... Read more >




Southern Copperhead
Southern Copperhead (Agkistrodon contortrix contortrix)
The Southern Copperhead is a moderate sized snake with thick, heavy banded body. Adults have a copper colored head and neck. The body is pale brown to light tan with a pinkish tint, patterned with dark, hour... Read more >
Broad-banded Copperhead
Broad-banded Copperhead (Agkistrodon contortrix laticinctus)
The Broad-banded Copperhead is light tan with broad reddish-brown or copper bands with a very thin white border. The number of bands varies from 10 to 17. It has a large head and hinged fangs that spring out when... Read more >
Northern Copperhead
Northern Copperhead (Agkistrodon contortrix mokasen)
The Northern Copperhead has dark chestnut cross bands that are narrower in the center and wider on the sides, giving the bands an hourglass shape. There are often small dark spots between the bands. There are also dark... Read more >
Osage Copperhead
Osage Copperhead (Agkistrodon contortrix phaeogaster)
The Osage Copperhead has dark chestnut cross bands that are narrower in the center and wider on the sides, giving the bands an hourglass shape. There are also dark rounded spots at the sides of the belly. The head is a... Read more >
Trans-pecos Copperhead
Trans-pecos Copperhead (Agkistrodon contortrix pictigaster)
The Trans-pecos Copperhead is light tan with brown wide cross bands. The band color varies from red-brown to gray-brown depending on locality. It is similar to A. contortrix laticinctus, the Broad-banded Copperhead. The... Read more >
Florida Cottonmouth
Florida Cottonmouth (Agkistrodon piscivorus conanti)
The Florida Cottonmouth is similar in pattern to A. p. piscivorus but has dark brown cheek stripe bordered above and below by narrow light lines. It has two dark stripes at the front of the lower jaw, and two dark... Read more >
Western Cottonmouth
Western Cottonmouth (Agkistrodon piscivorus leucostoma)
The Western Cottonmouth is the smallest of the three subspecies of Cottonmouth. It is similar to the Eastern Cottonmouth, A. p. piscivorus and the Florida Cottonmouth, A. p. conanti, except that they tend to become... Read more >
Eastern Cottonmouth
Eastern Cottonmouth (Agkistrodon piscivorus piscivorus)
The Eastern Cottonmouth is the largest species of the genus Agkistrodon. The head is broad and distinct from the neck. The snout is broad. The body has a heavy build and the tail that is fairly long and slender. The... Read more >
Eastern Diamondback Rattlesnake
Eastern Diamondback Rattlesnake (Crotalus adamanteus)
The Eastern Diamondback is a large dangerous snake - the venom can kill humans. The mortality rate from a full bite is about 40 percent. This rattlesnake is a bulky snake with a large head. There is a row of large dark... Read more >
Western Diamondback Rattlesnake
Western Diamondback Rattlesnake (Crotalus atrox)
The Western Diamondback Rattlesnake has a gray-brown, pinkish brown, brick red or yellowish, base color with a series of about 24 dark gray-brown or brown blotches. The first few blotches may be more rectangular,... Read more >
Sidewinder
Sidewinder (Crotalus cerastes)
The Sidewinder is cream, buff, yellowish brown, pink or pale gray with 28 - 47 blotches on the back. The blotches are roughly rhombus shaped or oval shaped. The underside is white. The Sidewinder moves over loose sand... Read more >
Baja California Rattlesnake
Baja California Rattlesnake (Crotalus enyo)
The Baja California Rattlesnake is a medium sized rattlesnake. It has a relatively small head with a stripe behind the eye. The color varies from tan to dark brown, grayish brown to silvery gray. Snakes in the southern... Read more >
Timber Rattlesnake
Timber Rattlesnake (Crotalus horridus)
The Timber Rattlesnake is a large venomous snake with a triangular head. The tail is black with no tail rings, and tipped with a rattle. There are two different color variations. One form is gray with black patterns;... Read more >
Banded Rock Rattlesnake
Banded Rock Rattlesnake (Crotalus lepidus klauberi)
The Banded Rock Rattlesnake is light grey with darker grey banding that varies greatly from habitat to habitat. The ground color may even be green or purplish in some areas. Snakes from the Franklin Mountain range in... Read more >
Rock Rattlesnake
Rock Rattlesnake (Crotalus lepidus lepidus)
The Rock Rattlesnake has a large, rounded head, and stocky body. The eyes that have vertical pupils. The color pattern is variable and generally matches the color of the rock in their natural environment. Snakes found... Read more >
Southwestern Speckled Rattlesnake
Southwestern Speckled Rattlesnake (Crotalus mitchellii pyrrhus)
The Southwestern Speckled Rattlesnake varies in color from white to dark grey or shades of pink or orange. It has dark diffused bands on the back. The scales are keeled scales. The head is large. It has salt-and-pepper... Read more >
Blacktail Rattlesnake
Blacktail Rattlesnake (Crotalus molossus molossus)
The Blacktail Rattlesnake is variable in color and can be olive green, yellow, brown or black. The tail is always black irrespective of body color. They often have a black band across the eyes and down to the corners of... Read more >
Southern Pacific Rattlesnake
Southern Pacific Rattlesnake (Crotalus oreganus helleri)
The Southern Pacific Rattlesnake has grey, olive, or brown background color with light-edged, darker diamonds on the back. The sides have angular light-edged blotches. There is a light stripe from corner of mouth to... Read more >
Great Basin Rattlesnake
Great Basin Rattlesnake (Crotalus oreganus lutosus)
The Great Basin Rattlesnake is a heavy-bodied, venomous snake with a thin neck and a large triangular head. It is buff, pale gray, pale brown, olive brown or yellowish brown ground color, with a series of 32-49 blotches... Read more >
Northern Pacific Rattlenake
Northern Pacific Rattlenake (Crotalus oreganus oreganus)
The Northern Pacific Rattlesnake is typically dark brown, dark gray (sometimes black or pale yellow,) overlaid with large dark blotches with uneven white edges on the back. The blotches are wider than the spaces... Read more >
Twin-spotted Rattlesnake
Twin-spotted Rattlesnake (Crotalus pricei)
The Twin-spotted Rattlesnake is gray, blue gray, brownish gray, reddish brown, and usually has fine brown speckling. The base color is overlaid with small dark blotches that are arranged in pairs down the back, forming... Read more >
Red Diamond Rattlesnake
Red Diamond Rattlesnake (Crotalus ruber)
The Red Diamond Rattlesnake is an impressive snake. It is a reddish or tan color with a light edged diamond pattern on its back. Some specimens are a brick red color. It has a distinctive black and white ringed tail.... Read more >
Mojave Rattlesnake
Mojave Rattlesnake (Crotalus scutulatus)
The Mojave Rattlesnake varies from brown to pale green depending on the surroundings. It has a dark diamond pattern along its back similar to the Western Diamondback rattlesnake (C. atrox). The Mojave Rattlesnake has a... Read more >
Tiger Rattlesnake
Tiger Rattlesnake (Crotalus tigris)
The Tiger Rattlesnake is a relatively small species of rattlesnake, with a small head and large rattle. It has a gray, blue-gray, pink or buff background color becoming pink, pale orange or cream on the sides. It has 35... Read more >
Hopi Rattlesnake
Hopi Rattlesnake (Crotalus viridis nuntius)
The Hopi Rattlesnake is the smallest subspecies of C. viridis. The color is variable and may be pink, gray or orange-brown in color, matching the soil and rock color of their natural range. The back has darker brown... Read more >
Arizona Ridgenose Rattlesnake
Arizona Ridgenose Rattlesnake (Crotalus willardi willardi)
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Desert Massasauga, Buzztail
Desert Massasauga, Buzztail (Sistrurus catenatus edwardsii)
The Desert Massasauga is a small rattlesnake with a light gray or white base color, with dark gray or gray brown blotches. There is a dark stripe along the side of the head passing over the eye. The rattles are quite... Read more >
Western Massasauga
Western Massasauga (Sistrurus catenatus tergeminus)
The Western Massasauga has tan-gray or light gray background color with dark brown blotches. The underside is light with some dark markings. The head has a dark broad stripe along each side. They have a high pitches... Read more >
Dusky Pigmy Rattlesnake
Dusky Pigmy Rattlesnake (Sistrurus miliarius barbouri)
The Dusky Pigmy Rattlesnake is a thick snake with a triangular shaped head. The body is light to dark gray with a row of black or dark gray blotches along a reddish brown stripe down the middle of the back. There are... Read more >
Carolina Pigmy Rattlesnake
Carolina Pigmy Rattlesnake (Sistrurus miliarius miliarius)
The Carolina Pigmy Rattlesnake is light gray, dark gray or reddish brown with a series of dark oval spots running down a reddish brown or orange brown stripe on the back. The spots have fairly regular edges. It has... Read more >
Western Pigmy Rattlesnake
Western Pigmy Rattlesnake (Sistrurus miliarius streckeri)
The Western Pigmy Rattlesnake is gray with a reddish stripe down the backbone and a series of irregular blotches along the back. These blotches are wider than they are long. There are one or two series of spots along... Read more >










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