Aruba Island Rattlesnake

Crotalus durissus

Rare Rattlesnake

The Aruba Island rattlesnake has a short and stocky looking body, with a rattle-tipped tail. Its overall color is brown with a lighter brown tail tip and its scaly skin has a pink, blue and brown diamond shaped markings.

About the Species

The Aruba Island rattlesnake is one of the rarest rattlesnakes in the world.

This species is rare because it only lives on one small island, where just 25 square kilometers of habitat remains undisturbed. Aruba Island rattlesnakes belong to the family of vipers, and like other vipers it has a V-shaped head and venomous long hollow fangs, which fold against the roof the mouth when they are not being used.

Words From the Experts


The Aruba Island rattlesnake is one of the rarest rattlesnakes in the world! There is only 25 square kilometers of habitat left in the wild where they are found.


Did You Know?

This snake is nocturnal in the warmer months and during the rest of the year is active in the early morning and late afternoon.



As its name suggests, this species if found on Aruba Island, located off the coast of Venezuela.


Habitat is rocky, dry and covered with cactus scrub and thorny plants.


Aruba Island rattlesnakes are 95 cm in length and .09-1.4 kg in weight


Diet consists of small rodents, birds, lizards


Crested Caracaras, merlins and osprey are possible snake-eating species found on Aruba.

Natural Defenses

Coloration, venom, and rattle serve as forms of protection.


Aruba Island rattlesnake is ovoviviparous with females giving birth to live young rather than producing eggs. They have small litters of 5-9 young. The young have fully functioning venom glands.


Critically Endangered

Life Expectancy

Average life expectancy 12-20 years

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