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The black-tailed rattlesnake (Crotalus molossus) is a venomous pit viper species found in the southwestern United States and Mexico. Four subspecies are currently recognized, including the nominate subspecies described here.
Adults of O. petolarius may attain a total length of 91 cm (36 in), which includes a tail 22 cm (8.7 in) long. [3] Coloration is variable. It usually consists of some combination of red and black rings or crossbands. In some individuals the light-colored crossbands are white instead of red on the anterior part of the body. [3]
The Arizona black rattlesnake is the first species of snake observed to exhibit complex social behavior, [11] and like all temperate pit vipers, care for their babies. Females remain with their young in nests for 7 to 14 days, and mothers have been observed cooperatively parenting their broods.
The dorsal fin has its origin just behind the head while the anal fin starts midway along the body; both run to near the tip of the tail. There are no pelvic or caudal fins, and the pectoral fins are small. This fish is cream or yellow, with large, brown or black, circular or oval spots.
Centipede snake (Tantilla armillata), Nicaragua (August 3, 2013) Smith's black-head snake (Tantilla hobartsmithi), El Paso County, Texas (July, 2021) Neotropical black-headed snake (Tantilla melanocephala), Paraíba, Brazil (October 2, 2018) Plains black headed snake (Tantilla nigriceps) Florida crowned snake (Tantilla relicta), Highlands County, Florida (March 20, 2007) Red black-headed snake ...
Pantherophis obsoletus, also known commonly as the western rat snake, black rat snake, pilot black snake, or simply black snake, [5] is a nonvenomous species of snake in the family Colubridae. The species is native to central North America. There are no subspecies that are recognized as being valid. [6] Its color variations include the Texas ...
D. melanurus is a large species that can grow to a total length (including tail) of 1.80 m (6 ft) to over 2.40 m (8 ft). This species has predominantly olive-brown glossy dorsal scales evolving to black at the tail. The underside is a lighter olive-yellow, olive-tan color.
Most common garter snakes have a pattern of yellow stripes on a black, brown or green background, and their average total length (including tail) is about 55 cm (22 in), with a maximum total length of about 137 cm (54 in). [2] [3] The average body mass is 150 g (5.3 oz). [4] The common garter snake is the state reptile of Massachusetts. [5]