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This is a list of snake species known to be found in the U.S. state of Illinois. [1] Concerns and listed statuses come from the Illinois Endangered Species Protection Board's February 2011 Checklist of endangered and threatened animals and plants of Illinois and the Illinois Natural History Survey's website.
The Chicago garter snake (Thamnophis sirtalis semifasciatus), is a subspecies of the common garter snake native to the Chicago, United States, region.It was described by Edward Drinker Cope in 1892, and can be found in the vicinity of rural waterways in northeastern Illinois, such as Piscasaw Creek in Boone County and McHenry County, Illinois.
An older snake may shed its skin only once or twice a year, but a younger, still-growing snake, may shed up to four times a year. [18] The discarded skin gives a perfect imprint of the scale pattern and it is usually possible to identify the snake if this discard is reasonably complete and intact. [9]
While a snake is in the process of shedding the skin over its eye, the eye may become milky. Scales over the snakes eyes harden, to be shed with the rest of the old skin. When the process is complete the snake emerges with its color deepened, the scales polished, the surfaces bright and undulled by contact with scratching brush, and with their ...
The fauna of Illinois include a wide variety of mammals, birds, amphibians, reptiles, fish and insects (not listed). The state bird is the Northern cardinal . The state insect is the monarch butterfly .
The snakes are non-venomous, and their teeth are so small that they can’t pierce skin. “Basically, if you’re not an earthworm, slug or snail, you’re safe,” Chavis said.
The skin of snakes is highly sensitive to contact, tension, and pressure; they are capable of feeling pain. [65] An important function of the skin is the sensation of changes in air temperature, which can guide the snakes towards warm basking/shelter locations. [66] All snakes are ectotherms. To maintain a stable body temperature, they exchange ...
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