Fauna
Reptile

Western Diamondback

Crotalus atrox

Also known as Western Diamond-Backed Rattlesnake, Texas Diamondback, Coontail Rattler

Western diamondback rattlesnakes are heavy-bodied pit vipers renowned for their striking brown diamond markings and distinctively banded black-and-white tails. They spend hot desert days coiling in shade or animal burrows, emerging at dusk to hunt warm-blooded prey using heat-sensing facial pits. When threatened, they coil tightly, rattle their modified tail segments in warning, and strike with high speed.

VenomousReptileCrepuscular
Western Diamondback reference1 / 7
(c) Sam Kieschnick, some rights reserved (CC BY), uploaded by Sam Kieschnick · cc-by
—observations
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—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Key facts
Diet & preyKangaroo Rats, Cottontail Rabbits, Ground Squirrels
Predators
  • Roadrunners
  • Red-Tailed Hawks
  • Kingsnakes
ThreatsHabitat loss, human persecution, rattlesnake roundups, road mortality
HabitatsDeserts, arid scrublands, canyons, rocky hillsides
Life span15–20 years in the wild
Classification
  1. FamilyViperidae
  2. GenusCrotalus
  3. SpeciesCrotalus atrox
Range & activity
Range data is not available yet.
Safe observation
Interaction riskVery high
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is very high
Possesses potent hemotoxic venom; keep a respectful distance of at least two body lengths and never approach.
Why it is dangerous
Injects potent hemotoxic venom containing proteolytic enzymes that cause severe tissue damage, intense pain, internal bleeding, and systemic shock.
How to recognize a risky encounter
Look for brown diamond patterns edged in white along the back, capped by a tail with stark, alternating black and white bands.
What to do
Never attempt to touch, catch, or relocate a wild individual; freeze and step back slowly if encountered on a trail.
Responsible observation
  • Give Space: Maintain a distance of at least twice the snake's body length to stay out of strike range.
  • Watch Your Step: Watch feet and hands carefully when walking around desert rocks, fallen logs, or high grass.
  • Listen Carefully: Retreat immediately if you hear a dry buzzing sound, which indicates a defensive warning.
Related species
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