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In certain regions, presence or absence of certain scales may be a quick way to distinguish non-venomous and venomous snakes, but used with care and knowledge of exceptions. For example, in Myanmar , the presence or absence of loreal scales can be used to distinguish between relatively harmless Colubrids and lethally venomous Elapids . [ 32 ]
Most snakes have extra broad scales on the belly, each scale covering the belly from side to side. The scales of all reptiles have an epidermal component (what one sees on the surface), but many reptiles, such as crocodilians and turtles, have osteoderms underlying the epidermal scale.
Non-European lizards such as Sphaerodactylus macrolepis also display keeled scales. [3] Klauber (1997) describes how the keels on the scales of Crotalus rattlesnakes are particularly strong mid-dorsally, but gradually weaken on the lateral rows with the ventral scales being smooth. He then references a 1938 study, stating that it "has suggested ...
Pituophis catenifer catenifer is a subspecies of large non-venomous colubrid snake native to the western coast of North America. Pacific gopher snakes are one of California's most common snake species. [2] They often get confused for rattlesnakes because they mimic similar patterns and defense mechanisms.
The snake is brown to olive with narrow, irregular cross-bands or blotches of darker brown. The belly surfaces are greenish-grey or olive-cream, often with darker blotches. The mid-body scales have a raised keel or carinated appearance. The coloration and scale structure has led to some confusion with the non venomous keelback snake. It grows ...
Out of Pennsylvania’s 21 species of snake only three are venomous. Two are found in the central region. ... if one of the native snake species is venomous is the scales. On top, the scales on a ...
The California night snake grows to a total length of 12 to 26 inches (30 to 66 cm), with hatchlings about 7 inches in total length. [3] The snake has a narrow flat head, smooth dorsal scales in 19 rows, and eyes with vertically elliptical pupils. [3] They are rear-fanged and considered to be venomous, but not dangerous to humans. [3]
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