🧬 Biological Classification (Kingdom to Species)Crotalus atrox
Kingdom
Animalia
Phylum
Chordata
Class
Reptilia
Order
Squamata
Family
Viperidae
Genus
Crotalus
Species
Crotalus atrox
Western Diamond-backed Rattlesnake (Crotalus atrox)📸 Photo

Photo: Gary Stolz (original) · Public domain · Wikimedia Commons Source

Reptilia🥩 Carnivore

Western Diamond-backed Rattlesnake

Crotalus atrox (Western Diamond-backed Rattlesnake · ニシダイヤガラガラヘビ)

🛡️ Conservation Status (IUCN Red List)LC (Least Concern)
DDData Deficient
LCLeast Concern
NTNear Threatened
VUVulnerable
ENEndangered
CRCritically End.
EWExtinct in Wild
EXExtinct
Geological Era
Extant
Diet
Carnivore
Length · Height
1.5m · No data
Mass · Top Speed
6.7kg · No data
Habitat & Fossil Locality
Dry, rocky shrub-covered terrain of southwestern North America, rock crevices and mouse burrows

💡 Everyday Comparisons for Size, Mass & Speed

  • 💡 Its maximum mass of 6.7 kg is about 2/3 of a 10 kg bag of rice (Comparison).
  • 💡 Animal Diversity Web notes that although it causes more fatalities than any other snake in the United States, it helps control rodents, its skin is used for shoes and belts, and live snakes are used in snake shows and zoo education.

Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.

📊 Mass & Speed Index (0–100)
⚖️ Mass Index (Blue Whale ~190 t = 100, log scale)46

Site-computed relative index from recorded values; not a formal scientific metric.

#서부다이아몬드방울뱀#Crotalus atrox

📖 1. Overview

The Western Diamond-backed Rattlesnake is a large rattlesnake living in dry, rocky scrublands, with a thick body and a rattle at the tip of its tail.

🦴 2. Anatomy & Morphology

It has a plump body, a short tail, and a broad triangular head. Between the eye and nostril lies a heat-sensing pit about 5 mm deep, and each segment of the tail rattle is a remnant of shed skin left behind at each molt.

🔍 3. Ecology & Behavior

It mainly preys on small mammals and birds, and occasionally takes other reptiles, amphibians, fish, and invertebrates. Its rattle vibrates 40–60 times per second as a warning, and it gives birth to 10–20 young via eggs that hatch inside the body.

🇰🇷 4. Connection to Korea

No direct record connecting this species to Korea has been found.

📚 Sources & References

Recorded dimensions are widely cited representative estimates from public literature and may vary by study or specimen.

🔗 Related & Comparable Species

DATA & LICENSE

📚 Data & Image Sources and Licenses

Full Citation Principles →
① Photos: Wikimedia Commons

Every photo's author and license is verified via the Wikimedia Commons API (PD, CC0, CC BY, CC BY-SA) and displayed with full attribution and source links.

② Summaries: Wikipedia

Wikipedia summary excerpts on detail pages are licensed under CC BY-SA 4.0 and linked to the original article.

③ Measurements & IUCN Status

Length, mass, and speed are representative estimates from published literature. Conservation status follows IUCN Red List categories (iucnredlist.org).

④ Silhouettes & Scale Diagrams

Silhouettes on the size comparison stage use open-licensed PhyloPic illustrations and custom body diagrams drawn at an exact 1m = 1m scale.

Expert review: looking for reviewers · compiled by quoting official (English) sources

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