Reptiles
Aruba Island Rattlesnake
Crotalus unicolor · also called cascabel
Among the cacti and limestone rocks of Arikok National Park, an Aruba Island rattlesnake lies coiled in the shade, its pale body almost the colour of the stone.
Overview
The Aruba Island rattlesnake, Crotalus unicolor, is a Critically Endangered venomous snake found only on the Caribbean island of Aruba. Its tiny range and pale colouring make it one of the most distinctive and rarest rattlesnakes in the world.
A rattlesnake on one island
With no other home, the snake depends on the dry scrub of eastern Aruba, where a national park shelters much of what is left.
Status
Critically Endangered, with a declining population.
Aruba Island Rattlesnake: common questions
Where does the Aruba Island rattlesnake live?
It lives only on Aruba, in the dry, rocky scrub of the east of the island, mainly in Arikok National Park.
Why is it Critically Endangered?
It is threatened by habitat loss to development, grazing by feral goats, and persecution by people afraid of venomous snakes.
Is the Aruba Island rattlesnake dangerous?
Yes, it is venomous, but it is shy, and a bite needs urgent medical attention.
What does it eat?
It hunts small rodents, lizards, and birds, which it ambushes and strikes.