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Mexican Pygmy Rattlesnake

Crotalus ravus

<i>Crotalus ravus</i> (commonly known as Mexican Pygmy Rattlesnake) is native to highlands of central Mexico, where it inhabits pine-oak forests and montane grasslands at high elevations.

Family
Viperidae
Origin
altopiani del Messico centrale
Origin
Central America and Caribbean
Tank use
Used in 0 tanks

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Species challenges
Water Temperature

14 °C - 26 °C

pH Value

n/a

Water type

Terrestrial

Basking spot

28 °C

UVB

Low

Species description

Geographical Origin and Habitat: Crotalus ravus (commonly known as Mexican Pygmy Rattlesnake) is native to highlands of central Mexico, where it inhabits pine-oak forests and montane grasslands at high elevations.

Taxonomy and Genetics: Belongs to the family Viperidae, genus Crotalus. It is studied for its unique venom genetics and specialized physiological adaptations.

Behavior and Habits: Predominantly terrestrial, solitary, and nocturnal. It spends most of the day camouflaged in leaf litter or under shelters waiting for prey.

Morphology: Adults reach an average size of 50.0 cm. Males typically exhibit longer tails than adult females.

Care, breeding and tankmates

Terrarium Setup: Requires an escape-proof terrarium of at least 100 liters with natural loose substrate and secure hiding spots.

Lighting and Heating: Carnivorous diet consisting of properly sized rodents fed via long feeding tongs. Supplement with vitamins.

Humidity and Hydration: Keep ambient temperatures at 14.0-26.0°C with a basking spot of 28.0°C. Provide low UVB.

Feeding and Supplementation: Solitary species, must be housed individually. Keeping multiple snakes together leads to severe stress.

Compatibility: Breeding is difficult in captivity, requiring a cooling period and careful introduction under supervision.

Health and Common Diseases: Prone to respiratory tract infections if ventilation is poor, and blister disease if the substrate is excessively wet.

Reptile profile

Diet
Carnivoro
Humidity
45 % - 65 %
Ambient temperature
21 °C
Basking spot
28 °C
UVB
Low
Adult size
50 cm
Minimum enclosure
100 L

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Last updated: 06/13/2026