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Nerodia is a genus of nonvenomous colubrid snakes commonly referred to as water snakes due to their aquatic behavior. The genus includes nine species , all native to North America . Five of the species have recognized subspecies .
Herpetology (from Greek ἑρπετόν herpetón, meaning "reptile" or "creeping animal") is a branch of zoology concerned with the study of amphibians (including frogs, salamanders, and caecilians (Gymnophiona)) and reptiles (including snakes, lizards, turtles, crocodilians, and tuataras).
Life in Cold Blood is a BBC nature documentary series written and presented by David Attenborough, first broadcast in the United Kingdom from 4 February 2008 on BBC One. [1]A study of the evolution and habits of amphibians and reptiles, it is the sixth and last of Attenborough's specialised surveys following his major trilogy that began with Life on Earth, hence a ninth part for the eight ...
Most lizard species and some snake species are insectivores. The remaining snake species, tuataras, and amphisbaenians, are carnivores. While some snake species are generalist, others eat a narrow range of prey - for example, Salvadora only eat lizards. [33] The remaining lizards are omnivores and can consume plants or insects. The broad ...
Snake scales are not discrete, but extensions of the epidermis—hence they are not shed separately but as a complete outer layer during each molt, akin to a sock being turned inside out. [61] Snakes have a wide diversity of skin coloration patterns which are often related to behavior, such as the tendency to have to flee from predators.
An Annotated Checklist and Key to the Reptiles of Mexico Exclusive of Snakes. United States National Museum, Bulletin 199: 1–253. Reptiles and Amphibians: A Guide to Familiar American Species with Herbert S. Zim (1953, 1956). Reptiles and Amphibians - A Guide to Familiar American Species (1958). Poisonous Amphibians and Reptiles (1959).
According to the International Union for Conservation of Nature (IUCN), 93 reptile and amphibian species in the United States are threatened with extinction. [1] The IUCN has classified each of these species into one of three conservation statuses: vulnerable VU, endangered EN, and critically endangered CR.
Handbook of Snakes of the United States and Canada. Ithaca and London: Comstock. 1,105 pp. (in two volumes) (Cemophora coccinea, pp. 111–115, Figure 36, Map 13). Zim HS, Smith HM (1956). Reptiles and Amphibians: A Guide to Familiar American Species. A Golden Nature Guide.