ID#: 8134
This is a northern black tailed rattlesnake, Crotalus molossus molossus, with a range including portions of southern and central Arizona, southern New Mexico and southwestern Texas and adjacent Mexico (Connant 1975). In the eastern aspect of its range, it inhabits the wooded canyons, cliffs and rock piles in the west-central Edwards Plateau, and the adjacent Chihuahuan Desert. Though present only in the southwestern extreme of the hurricane prone region of North America (Tennant, 1998), it is of importance to those living in these regions, and first-responders.

Typically a mild tempered rattlesnake, it still packs moderate, to large amounts of potent venom. Because of apparent antigenic differences in black tailed rattlesnake venom, treating bites with “CroFab” antivenin can require comparatively larger doses than bites of other rattlesnake species (Consroe et al., 1995; Sanchez et al 2003a, 2003b; Yarema and Curry, 2005).

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Content Provider(s): CDC/ Edward J. Wozniak D.V.M., Ph.D.
Creation Date: 2005
Photo Credit: Christina Wozniak at the Houston Zoo
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Copyright Restrictions: None - This image is in the public domain and thus free of any copyright restrictions.