Dusky Pygmy Rattlesnake

Sistrurus miliarius barbouri

Buzz Buzz!

The tail of a dusky pygmy rattlesnake rarely has more than just a few rattles. This, combined with the fact that the rattle is so small, causes the sound of the rattle to be similar to the buzzing of an insect.

About the Species

The pygmy rattlesnake is a short snake, although rather thick-bodied for its size.

Markings include a dark line through each eye, roughly circular spots running down the center of the back, a thin reddish-orange stripe along the body line, and dark spots on its white belly. The dusky pygmy rattlesnake is found all throughout Florida, except for in the Florida Keys. They are "sit-and-wait" ambush predators, often not moving from their location for days at a time. As young snakes, their diet is primarily frogs and lizards. Because these prey items eat insects, the dusky pygmy rattlesnake often use "caudal luring", a method in which the snake moves its tail in a way that mimics an insect. As young snakes, the dusky pygmy rattlesnake also has a brightly colored tail, which aids in this trickery. As they get older, this coloration wears off, but the snakes begin to hunt slightly large prey (such as mice) and use their heat-seeking pits on their faces to do so.

Words From the Experts

Quotes

This small species of rattlesnake is the most common venomous snake in Central Florida. Good news though, there is not one recorded fatality from a pygmy rattlesnake bite!

Dave

Did You Know?

The pygmy rattlesnake is also called a ground rattler. It is the most abundant venomous snake in Florida.

Facts

Origin

FL (excl. Keys), to eastern NC, west to east TX and MO

Habitat

Moist/wet lowlands, logs, stumps animal burrows

Size

36–60 cm long | 150 grams

Diet

Mice, lizards, snakes, frogs insects, spiders nesting birds

Predators

Raptors, mammalian carnivores, snake-eating snakes

Natural Defenses

Hiss and rattle before striking. Venom not fatal but painful

Reproduction

ovoviviparous; 6 per litter on avg.

Status

Least concern

Life Expectancy

Up to 20 years

  • Saving Animals From Extinction
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  • Florida Association of Zoos and Aquariums
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