Eastern Diamondback Rattlesnake

Common Name:
Eastern Diamondback Rattlesnake
Scientific Name:
Crotalus adamanteus
Type:
Reptiles
Diet:
Carnivore
Average Life Span In The Wild:
10 to 20 years
Size:
5.5 feet
Weight:
5 pounds
IUCN Red List Status:
Least concern
Current Population Trend:
Decreasing

The eastern diamondback rattlesnake is the largest venomous snake in North America. Some reach 8 feet in length and weigh up to 10 pounds.

Habitat and Behavior

These stout-bodied pit vipers generally live in the dry, pine flatwoods, sandy woodlands, and coastal scrub habitats from southern North Carolina to Florida and west to Louisiana. Their pattern of yellow-bordered, light-centered black diamonds makes them among the most strikingly adorned of all North American reptiles. They are natural exterminators, surviving on such household pests as rats and mice, as well as squirrels and birds.

Feared as deadly and aggressive, diamondbacks are actually highly averse to human contact and only attack in defense. Most bites occur when humans taunt or try to capture or kill a rattlesnake. They can accurately strike at up to one-third their body length.

Venom

Diamondback venom is a potent hemotoxin that kills red blood cells and causes tissue damage. Bites are extremely painful and can be fatal to humans. However, antivenin is widely available throughout the snake's range, and bites rarely result in death.

Distinctive Rattle

When cornered, rattlers feverishly shake their iconic tails as a last warning to back off. Rattles are made of loosely attached, hard, hollow segments. Snakes add a new rattle segment each time they shed. However, rattles break off frequently, and snakes may shed their skin several times a year, so it is not possible to determine a snake's age by its rattle size.

Threats to Survival

The eastern diamondback is not endangered, but because of indiscriminate killing, widespread loss of habitat, and hunting, its numbers are decreasing throughout its range.

This photo was submitted to Your Shot, our photo community on Instagram. Follow us on Instagram at @natgeoyourshot or visit us at natgeo.com/yourshot for the latest submissions and news about the community.
This photo was submitted to Your Shot, our photo community on Instagram. Follow us on Instagram at @natgeoyourshot or visit us at natgeo.com/yourshot for the latest submissions and news about the community.
Photograph by Tomaz Jagar, National Geographic Your Shot

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