Dusky Pygmy Rattlesnake

Sistrurus miliarius barbouri

Buzz Buzz

The tail of a dusky pygmy rattlesnake rarely has more than 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 it is 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 throughout Florida, except for 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! There is not one recorded fatality from a pygmy rattlesnake bite!

Heather

Did You Know?

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

Facts

Origin

Home range from eastern North Carolina to the Florida Keys, west to Oklahoma and eastern Texas and north to southern Missouri and southwestern Kentucky.

Habitat

Native habitat is moist or wet lowlands. It shelters under logs, stumps or in animal burrows.

Size

Range in length from 36-60 cm Weighs approximately 150 grams

Diet

Diet consists of mice, lizards, snakes, frogs as well as insects, spiders and nesting birds

Predators

Various raptors, mammalian carnivores, snake-eating snakes

Natural Defenses

Hiss and rattle in warning before striking. Its venom is typically not fatal but can be extremely painful

Reproduction

Females are ovoviviparous giving birth to live young. Average litter size is 6.

Status

Least concern

Life Expectancy

Life expectancy of up to 20 years

  • Saving Animals From Extinction
  • Culture Builds Florida
  • Florida Association of Zoos and Aquariums
MENU