Western diamondback rattlesnake
Crotalus atrox
One of the largest venomous snakes in North America, the western diamondback requires a high-security, dry terrarium. Manageable only by highly experienced professionals.
- Taxonomy
- Class:SquamataOrder:SquamataFamily:ViperidaeSubfamily:CrotalinaeGenus:CrotalusSpecies:Crotalus atrox
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Terrestrial
30 - 55 %
18 - 34 °C
18 - 34 °C
22.5 - 24.5 °C
34 °C
150 cm
>= 400 L
Low
Species description
Care, breeding and tankmates
Geographic Origin and Distribution
Origin
Reptile profile
- Diet
- Carnivore
- The Western diamondback rattlesnake is a formidable predator with a diet that heavily features small to medium-sized mammals. It frequently preys upon prairie dogs, rabbits, ground squirrels, and various species of mice and rats. It will also consume ground-dwelling birds and lizards, particularly when young. It relies on its potent venom, injected through long, hollow fangs, to rapidly dispatch prey before swallowing it whole.
- Adult size
- 150 cm
- The catalog's scalar value is 150 cm. The ReptTraits v1.2 source reports a maximum adult measurement of 233.7 cm for this species, recorded as total length (TL). These figures are not interchangeable: the first is the profile's editorial reference, whereas the second is a published maximum under a specific measurement convention; differences among sources can reflect sex, population, life stage and measuring method.
- Lifestyle/Microhabitat
- Terrestrial
- Highly adaptable and strictly terrestrial, it thrives in dry habitats spanning deserts, scrublands, and plains, utilizing burrows made by other animals or dense brush for shelter.
- Activity cycle
- Crepuscular
- It adjusts its activity based on temperature, being largely crepuscular and nocturnal during the sweltering summer, but shifting to diurnal basking and hunting in early spring and late fall.
- Sociality
- Gregarious
- This iconic rattlesnake is famous for its defensive stand; when threatened, it tightly coils its body, raises its head, and vibrates its rattle aggressively. It is primarily terrestrial and can be found across a variety of habitats, from desert scrub to rocky canyons. While capable of diurnal activity in milder weather, it becomes strictly crepuscular or nocturnal during the peak heat of summer. During the winter months, many individuals gather in communal dens to brumate until spring.
- Reproduction
- Viviparous
- Reproduction involves the birth of live young, typical of rattlesnakes, occurring usually in late summer. Mating season takes place in the spring, during which males often engage in elaborate combat dances to establish dominance. A single female can produce anywhere from a dozen to over twenty young in a single litter. Neonates are completely independent and highly venomous from the very first day of their lives.
- Handling tolerance
- Expert only
- Known for a highly defensive temperament and a massive venom yield, this snake demands zero physical contact and requires robust enclosure security alongside rigorous handling protocols.
- Brumation
- Not required
- They require a winter brumation, often gathering in communal dens within deep rock crevices or burrows to escape the freezing winter temperatures characteristic of their native range.
- Molting
- Regular
- Adapted to arid environments, they need relatively low ambient humidity. A localized humid hide is all that is necessary to prevent dysecdysis during their shedding phase.
Image gallery
Licensed images linked to the species or, when marked, to the closest representative taxon.
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Variants and close relatives
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