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The Louisiana pine snake (Pituophis ruthveni) is a species of large, non-venomous, constrictor in the family Colubridae. [ 3 ] [ 4 ] This powerful snake is notable because of its large eggs and small clutch sizes.
The buttermilk racer is a thin-bodied snake, capable of attaining a total length of 1.52 m (60 inches). Its color is a unique pattern of black , greens , yellows , greys and even sometimes blues , flecked with white or yellow.
Louisiana's forests offer a mix of oak, pine, beech, black walnut, and cypress trees. In the Piney Woods in the Ark-La-Tex-region, mammals such as the North American cougar, gray fox, feral hogs , and snakes such as the western cottonmouth, the western worm snake, the Louisiana pine snake, as well as other animals are common. [4]
In all snakes of the genus Pituophis, the epiglottis is peculiarly modified so that it is thin, erect and flexible. When a stream of air is forced from the trachea , the epiglottis vibrates, thereby producing the peculiarly loud, hoarse hissing for which bullsnakes, gopher snakes, and pine snakes are well known.
N. cyclopion differs from most other species of North American water snakes by having one or more small scales under the eye, giving the appearance of a ring of small plates around the eye, a character shared with the species N. floridana. [8] A heavy-bodied snake, N. cyclopion is dark green, olive, or brown dorsally. Ventrally, it is yellowish ...
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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 .
The evolutionary path of these separate glands may come from “venom proteins” whose genes are widely expressed in tissues of both venomous and non-venomous snakes. These genes are over-expressed in the venom glands (including Duvernoy's gland), indicating the secretions from these glands evolved separately, rather than sequentially. [5]