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a b Luch, Andreas, ed. (2010). Molecular, Clinical and Environmental Toxicology. Vol.2. Springer. p.267. ISBN 978-3-7643-8337-4. Bryan Hughes (March 2, 2019). "Are rattlesnakes evolving to rattle less, or losing their rattles?". Rattlesnake Solutions. Myers, Bob (1991). "Rattles". American International Rattlesnake Museum. Albuquerque, New Mexico. Archived from the original on 2022-06-30.

Newton, Maud (2011). "How Does Rattlesnake Taste?". The New York Times . Retrieved November 21, 2014. This article is about the reptile. For other uses, see Rattlesnake (disambiguation) and Rattler (disambiguation). Rattlesnake Campbell, Angela L.; Naik, Rajesh R.; Sowards, Laura; Stone, Morley O. (2002). "Biological Infrared Imaging and Sensing". Micron. 33 (2): 211–225. doi: 10.1016/S0968-4328(01)00010-5. PMID 11567889. The skin of rattlesnakes is intricately patterned in a manner that camouflages them from their predators. [62] [63] Rattlesnakes do not generally have bright or showy colors (reds, yellows, blues, etc.), instead relying on subtle earth tones that resemble the surrounding environment. [64]Like all pit vipers, rattlesnakes have two organs that can sense radiation; their eyes and a set of heat-sensing "pits" on their faces that enable them to locate prey and move towards it, based on the prey's thermal radiation signature. These pits have a relatively short effective range of about 1ft, but give the rattlesnake a distinct advantage in hunting for warm-blooded creatures at night. [26] [27] Heat-sensing pits located in blue circle on a rattlesnake specimen: Location of the pit is the same in all Viperidae. 1. Trigeminal nerve extending into the heat-sensing pit 2. Trigeminal nerve originating in the brain 3. Heat-sensing pit Heat-sensing pits [ edit ] a b c Fleisher, Gary R.; Ludwig, Stephen, eds. (2010). Textbook of Pediatric Emergency Medicine (6thed.). Lippincott Williams & Wilkins. p.1548. ISBN 978-1-60547-159-4. Whitefold, 2020 The rattlesnakes movement is bound to its physical makeup and the environment. Environmental temperature can influence the ability of ectotherms to capture prey and/or defend themselves against predators

The most probable ancestral area of rattlesnakes is the Sierra Madre Occidental region in Mexico. The most probable vegetation or habitat of the ancestral area appears to be pine-oak forests. [11] Prey [ edit ]Rattlesnakes travel with their rattles held up to protect them from damage, but in spite of this precaution, their day-to-day activities in the wild still cause them to regularly break off end segments. Because of this, the number of rattles on its tail is not related to the age of a rattlesnake. [1] [49] [50] The venom is hemotoxic, destroying tissue, causing necrosis and coagulopathy (disrupted blood clotting). [41] In the U.S., the tiger rattlesnake ( C. tigris) and some varieties of the Mojave rattlesnake ( C. scutulatus) also have a presynaptic neurotoxic venom component known as Mojave type A toxin, which can cause severe paralysis. [41] [42] [43] Although it has a comparatively low venom yield, [44] the venom toxicity of C. tigris is considered to be among the highest of all rattlesnake venoms, and among the highest of all snakes in the Western Hemisphere based on LD 50 studies conducted on laboratory mice. C. scutulatus is also widely regarded as producing one of the most toxic snake venoms in the Americas, based on LD 50 studies in laboratory mice. [45] Rubio 1998, p.59 – Knowledge that rattlesnakes are so afraid of kingsnakes' odor led to the development of effective synthetic rattlesnake repellents.