Timber rattlesnakes are most easily observed in spring and early summer when they move around. One effect of the toxin can be generalized myokymia. A timber rattlesnake bite is a medical emergency. The Mexican west coast rattlesnake is listed as a species of least concern, owing primarily to its wide distribution throughout coastal Mexico. Sometimes called the sidewinder, the horned rattlesnake(Crotalus cerastes) is a small pit viper that lives in the southwestern US and northwestern regions of Mexico. It's known by many names, American viper, bastard rattlesnake, black rattlesnake, common rattlesnake, eastern rattlesnake, great yellow rattlesnake, mountain rattlesnake, northern banded rattlesnake, northern rattlesnake, pit viper, rock rattlesnake, velvet tail, yellow rattlesnake. Urban development is the greatest concern for timber rattlesnakes in states where the species has protected status. As North Americas longest and heaviest venomous snake, the eastern diamondback tends to be larger than the timber. Under the order Squamata, rattlesnakes are part of the clade Ophidia. Meanwhile, there are anywhere from 30 to 60 species in the genus Crotalus, depending on who you ask. Although bites are rare, immediate medical attention is necessary. Because of the distinctive black tail, these snakes are often called velvet tails. Background color of the body is gray to ash gray and an orange or orange-red line about 3 6 scales wide extends on the top of the body from the back of the head to the tail. Want to impress your friends and family with all your rattlesnake knowledge? Also known as the cascabel rattlesnake, this species is found nearly everywhere in the northern part of South America except for the Andes Mountains. A Pacific Northwest native, she now travels the country with her beloved dog by her side. The black-tailed rattlesnake (Crotalus molossus) is one of the most venomous pit viper snake species. It has a rattle-like structure on the end of its tail, but it cant actually make a rattling sound. [23], Timber rattlesnakes are present in the eastern United States from southern Minnesota and southern New Hampshire, south to East Texas and North Florida. Boasting a distinctive set of striped scales, the suitably named tiger rattlesnake(Crotalus tigris) is a highly venomous serpent that lives in northwestern Mexico and the southwestern United States. During spring and fall, these snakes are diurnal, but become nocturnal during summer. Habitat: Wooded areas, rocky outcrops, and swampy marshlands. Females generally do not reproduce each year, producing litters of live young every other year, every third year, or in some cases, every fourth year. There are 3 recognized subspecies of the pygmy rattlesnake, all of which are endemic to the southeastern US. The foot-long baby rattlers are born encased within a membrane that they immediately shed. Likewise, timber rattlesnakes are endangered in Ohio, Connecticut, New Hampshire, Massachusetts and Vermont. [37], Their prey are mainly small mammals, but may include small birds, frogs, and other small animals, including other snakes. A single litter can have three to 13 snakes. [23], Males often mate farther away from winter hibernacula than females. The only remotely similar snake is the western pygmy rattlesnake, which is much smaller in size (usually less than two feet in total length), has spots rather than cross bands, and has a very small rattle. Both of these snakes have long, hollow fangs to deliver powerful venom; they sense their prey with pit organs and warn of their strike with the shaking of rattles at the tip of their tails. Canebrake Rattlesnake vs Timber Rattlesnake: With Willy Beard.