Reptile · GBIF taxon 2444222
Pygmy Rattlesnake
Sistrurus miliariusAlso known as Ground Rattlesnake, Dusky Pygmy Rattlesnake, Southeastern Pygmy Rattlesnake, Little Rattlesnake
Pygmy rattlesnakes are small, stout pit vipers named for their tiny rattle that produces a faint buzz resembling an insect. They actively forage along leaf litter and forest edges, using cryptic coloration to ambush lizards, frogs, and small rodents. Females give birth to live young in late summer, with newborns possessing bright yellow-tipped tails used to lure prey.
VenomousCamouflagedReptile
Licensed referenceWikimedia Commons / Public domain · cc0
—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Diet & prey
- Lizards
- Frogs
- Small Rodents
Predators
- Kingsnake
- Red-tailed Hawk
- Opossum
ThreatsHabitat fragmentation, road mortality, and intentional killing
HabitatsPine flatwoods, sandhills, oak scrub, and marsh edges
Life span10–15 years
Size / weightNot available
Classification
- FamilyViperidae
- SpeciesSistrurus miliarius
Range data is not available yet.
Interaction riskVery high
- Low
- Moderate
- High
- Very high
- Why interaction risk is very high
- Bites deliver cytotoxic venom causing intense pain; observe from at least two meters away.
- Why it is dangerous
- Venom is cytotoxic, causing rapid swelling, severe tissue pain, and potential localized necrosis.
- How to recognize a risky encounter
- Look for a thick body with grey, pinkish, or orange tones, dark spots, and a slender tail tipped with a tiny rattle.
- What to do
- Freeze immediately if spotted nearby and back away slowly; never reach into blind patches of leaf litter.
Responsible observation
- Watch Your Step: Scan leaf litter and fallen logs carefully when walking through southern pine forests.
- Listen Closely: Listen for a faint insect-like buzz, which indicates a defensive pygmy rattle nearby.
- Wear Boots: Stick to clear paths and wear sturdy high-top boots when hiking off-trail.
Predator (c) evangrimes, some rights reserved (CC BY), uploaded by evangrimes · cc-by
Prey (c) Robert Michniewicz (edited by Ark), some rights reserved (CC BY-SA) · cc-by-sa
Sympatric Pit Viper Wikimedia Commons / Public domain · cc0
Co-occurring Relative (c) evangrimes, some rights reserved (CC BY) · cc-by
Close Relative (c) Willem Span, some rights reserved (CC BY), uploaded by Willem Span · cc-by
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