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Crotalus helleri or Crotalus oreganus helleri, also known commonly as the Southern Pacific rattlesnake, [3] the black diamond rattlesnake, [4] and by several other common names, is a pit viper species [5] or subspecies [3] found in southwestern California and south into Baja California, Mexico, that is known for its regional variety of dangerous venom types.
In southern California, these snakes have sometimes been found in chaparral or cactus country, but usually never stray far from the rocks that provide its usual shelter. Not exclusively a rock dweller, they have also been observed emerging from mammal burrows at dusk.
Twig snakes are among the few rear-fanged colubrids whose bite is highly venomous and potentially fatal. [4] The venom is hemotoxic, and although its effects are very slow, and bites are rare, no antivenom has been developed and several fatalities (such as Robert Mertens) have occurred.
The California kingsnake (Lampropeltis californiae) is a nonvenomous colubrid snake endemic to the western United States and northern Mexico, and is found in a variety of habitats. Due to ease of care and a wide range of color variations, the California kingsnake is one of the most popular snakes in captivity.
The current estimate is that nearly 2,000,000 of these snakes exist within all the habitat they occupy in southern California, and in light of the DNA analysis by Rodriguez-Robles (1999) which lumps L. z. pulchra with L. z. parvirubra, the probable population exceeds 5 million snakes. Most of those serpents live within terrain that is roadless ...
This list of reptiles of California includes the snakes, turtles and lizards found in the US state of California. Endemic species. Introduced species. Lizards
They have a distinctive, thick scale curved back over the top of the snout, and free at the edges. [7] All subspecies are yellowish with blackish lateral stripes in various arrangements. [8] The dorsal scales are smooth, and the anal plate is divided. [7]
The California whipsnake, M. lateralis, has a range from Trinity County, California, west of the Sierra Nevada Mountains to northwestern Baja California, at altitudes between 0–2,250 metres (0–7,382 ft) and is known to use a wide variety of habitat types including the California coast and in the foothills, the chaparral of northern Baja, mixed deciduous and pine forests of the Sierra de ...