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A color band may be seen at the back of the eye. The prairie rattlesnake group carries the distinctive triangle-shaped head and pit sensory organs on either side of the head. A key characteristic that can help differentiate a prairie rattlesnake from other rattlesnakes is the presence of two internasals contacting the rostral. [9]
Crotalus oreganus, commonly known as the Western rattlesnake or northern Pacific rattlesnake, [4] [5] is a venomous pit viper species found in western North America from the Baja California Peninsula to the southern interior of British Columbia.
Like other rattlesnakes, they have eyes with vertical pupils, and their tail has a rattle on it. The rattle is composed of keratin. Each time the snake sheds its skin, a new segment is added to the rattle, but the rattle is fragile and may break off, and the frequency of shedding can vary, so the snake's age cannot be determined by its length ...
Prairie rattlesnake Crotalus viridis or the prairie rattlesnake Characteristics: Prairie rattlesnakes are very heavy bodied and not quite as large as timber rattlesnakes, with common range not ...
The western fence lizard occupies a variety of habitats. It is found in grassland, broken chaparral, sagebrush, woodland, coniferous forest, and farmland, and occupies elevations from sea level to 10,800 ft. [7] They generally avoid the harsh desert. In Idaho, western fence lizards are found across the lower, western half of the state. [43]
Western rattlesnake may refer to: Crotalus oreganus, a venomous pitviper species found in North America in the western United States, parts of British Columbia and northwestern Mexico; Crotalus viridis, a.k.a. the prairie rattlesnake, a venomous pitviper species native to the western United States, southern Alberta, Canada, and northern Mexico
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It lives in the lower Yellowstone River areas of the park, including Reese Creek, Stephens Creek, and Rattlesnake Butte, where the habitat is drier and warmer than elsewhere in the park. Its behavior is usually defensive rather than aggressive. There have been only two rattlesnake bites reported during the history of the park. [2]