# Western Rattlesnake (*Crotalus oreganus*) The Western Rattlesnake is a cool snake known for its rattling tail! It uses its rattle to warn others when it feels scared. These snakes can be found in many places and are important for nature. - **Category:** [Reptiles](https://www.snappit.app/explore/categories/reptile) - **Rarity:** Common - **Danger:** 5/5 · Extreme - **Snaps:** 25 - **Habitat:** Desert - **Also known as:** Rattler ![Western Rattlesnake](https://commons.wikimedia.org/w/index.php?title=Special:Redirect/file/Crotalus_oreganus.jpg&width=800) Photo: Connor Long, CC BY-SA 4.0 · [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Crotalus_oreganus.jpg) ## Appearance The Western Rattlesnake has a stout body with diamond or blotchy patterns, usually in shades of brown, tan, or grey, edged in white or cream. Its triangular head is notably broader than its neck, and it famously ends with a segmented rattle, making it distinct from non-venomous snakes. ## Taxonomy - **Kingdom:** Animalia - **Phylum:** Chordata - **Class:** Squamata - **Order:** Serpentes - **Family:** Viperidae - **Genus:** Crotalus ## Interesting facts - A rattlesnake's strike is incredibly fast, faster than a blink, but only covers a short distance! - Their fangs are like tiny, foldable hypodermic needles that inject venom into prey! - They add a new segment to their rattle each time they shed their skin, but not every year! - Unlike most snakes, Western Rattlesnakes give birth to live baby snakes, not eggs! ## Special abilities - **Heat Vision:** Western Rattlesnake can 'see' warm-blooded prey using special pits on its face that detect heat, even in total darkness. - **Sound Alarm:** Western Rattlesnake can vibrate its unique tail segments to create a loud, distinctive rattle, warning off potential threats. - **Silent Strike:** Western Rattlesnake has retractable, hollow fangs that deliver potent venom, allowing it to quickly immobilize its prey. ## Measurements & details - **Length:** 50-165 cm - **Weight:** 0.2-1.5 kg - **Lifespan:** 10-20 years - **Speed:** 5 km/h - **Clutch Size:** 3-12 ## Diet & Feeding This snake is a carnivore, primarily hunting small mammals and birds using its venomous bite. - **Age differences:** Younger rattlesnakes may consume a higher proportion of lizards and smaller rodents than adults. - **Primary Foods:** mice, gophers, voles, ground squirrels, small birds, lizards - **Foraging Method:** Ambush ## Ecological connections - **Eats:** [Deer Mouse](https://www.snappit.app/explore/deer-mouse) (*Peromyscus maniculatus*) — A primary food source for adults and juveniles. - **Eats:** [Botta's Pocket Gopher](https://www.snappit.app/explore/bottas-pocket-gopher) (*Thomomys bottae*) — Frequently preys on these burrowing rodents. - **Eaten by:** [Red-tailed Hawk](https://www.snappit.app/explore/red-tailed-hawk) (*Buteo jamaicensis*) — Large raptors can prey on juvenile rattlesnakes. - **Eaten by:** [Coyote](https://www.snappit.app/explore/coyote) (*Canis latrans*) — Known to occasionally prey on rattlesnakes. ## Traits - [Spotted](https://www.snappit.app/explore/traits/spotted): Marked with spots or patches of a different color. - [Solitary](https://www.snappit.app/explore/traits/solitary): Solitary animals live alone for most of their lives, only interacting with others for mating or parental care. - [Camouflaged](https://www.snappit.app/explore/traits/camouflaged): Camouflaged describes organisms that possess coloring or patterns that allow them to blend into their environment. - [Desert](https://www.snappit.app/explore/traits/desert): Desert habitats are arid regions characterized by extremely low precipitation and often extreme temperatures, supporting specialized flora and fauna. - [Ambush Predator](https://www.snappit.app/explore/traits/ambush-predator): An ambush predator hunts by patiently waiting and concealing itself, then launching a sudden attack when unsuspecting prey comes within range. - [Longevous](https://www.snappit.app/explore/traits/longevous): This trait characterizes organisms with an exceptionally long lifespan compared to others of their kind. - [Carnivorous](https://www.snappit.app/explore/traits/carnivorous): This trait identifies organisms whose diet consists entirely or primarily of animal tissue. - [Diurnal](https://www.snappit.app/explore/traits/diurnal): Diurnal animals are primarily active during daylight hours, typically resting or sleeping at night. - [Keystone Species](https://www.snappit.app/explore/traits/keystone-species): Describes a species whose presence and role have a disproportionately large effect on its environment. - [Venomous](https://www.snappit.app/explore/traits/venomous): Venomous organisms produce toxins that are injected into another animal, typically through a bite or sting. ## Collections - [Reptiles](https://www.snappit.app/explore/collections/reptiles) ## Safety **Danger:** 5/5 · Extreme If you see a rattlesnake, stay calm and walk away slowly. It's best to admire them from a distance. ## Frequently Asked Questions ### How to identify Western Rattlesnake? Compare the full body pattern, build, head markings and tail. Color can shift with age and lighting. Rules of thumb about triangular heads or round pupils aren't a reliable way to tell whether a snake is venomous. Snake Identifier: upload a photo and compare the visible details. ### How long is Western Rattlesnake? 50-165 cm ### How much does Western Rattlesnake weigh? 0.2-1.5 kg ### How long does Western Rattlesnake live? 10-20 years ### How fast can Western Rattlesnake move? 5 km/h ### What does Western Rattlesnake eat? This snake is a carnivore, primarily hunting small mammals and birds using its venomous bite. ### Where is Western Rattlesnake usually found? Desert ### How does Western Rattlesnake hunt? Ambush ## Where to spot - [Arastradero Preserve](https://www.snappit.app/guides/places/arastradero-preserve) — California, US · Nature Reserve - [Black Diamond Mines Regional Preserve](https://www.snappit.app/guides/places/black-diamond-mines-regional-preserve) — California, US · Nature Reserve - [Hakone Gardens](https://www.snappit.app/guides/places/hakone-gardens) — California, US · Botanical Garden - [Jasper Ridge Biological Preserve](https://www.snappit.app/guides/places/jasper-ridge-biological-preserve) — California, US · Nature Reserve - [Pasayten Wilderness](https://www.snappit.app/guides/places/pasayten-wilderness) — Washington, US · Nature Reserve - [Ruth Bancroft Garden](https://www.snappit.app/guides/places/ruth-bancroft-garden) — California, US · Botanical Garden [View all places to see Western Rattlesnake](https://www.snappit.app/guides/where-to-see/western-rattlesnake) ## More Reptiles - [Pond Slider](https://www.snappit.app/explore/pond-slider) (*Trachemys scripta*) - [Western Fence Lizard](https://www.snappit.app/explore/western-fence-lizard) (*Sceloporus occidentalis*) - [Common Five-lined Skink](https://www.snappit.app/explore/common-five-lined-skink) (*Plestiodon fasciatus*) - [Desert Spiny Lizard](https://www.snappit.app/explore/desert-spiny-lizard) (*Sceloporus magister*) --- Source: [Western Rattlesnake: Facts & Places to See — Snappit](https://www.snappit.app/explore/western-rattlesnake)